CN203966386U - The teaching aid of table dispatching method - Google Patents
The teaching aid of table dispatching method Download PDFInfo
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- CN203966386U CN203966386U CN201420370177.6U CN201420370177U CN203966386U CN 203966386 U CN203966386 U CN 203966386U CN 201420370177 U CN201420370177 U CN 201420370177U CN 203966386 U CN203966386 U CN 203966386U
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Abstract
The utility model discloses a kind of teaching aid of table dispatching method, comprise calculation magnetic sheet (1), on calculation magnetic sheet (1), be provided with calculation form (2), on calculation form (2), be provided with several magnetic number blocks (3); In calculation magnetic sheet (1) surrounding, be provided with bar shaped frame, described bar shaped frame is divided into the horizontal bar shaped frame (4) of upper and lower correspondence and longitudinal bar shaped frame (5) of left and right correspondence; On calculation magnetic sheet (1), be provided with occlusion part.In this way, teacher has reduced to greatest extent the number of times of teacher's picture table when giving lessons, do not need continuous blackboard wiping to upgrade, avoided teacher to suck too much dust, avoided teacher's hand and clothing to be made dirty by chalk dust simultaneously, saved teacher's instructional blocks of time, changed and blackboard had been relied on to large defect in the past, economy, environmental protection, efficient.
Description
Technical field
The utility model relates to a kind of teaching aid, especially the teaching aid of table dispatching method.
Background technology
Table dispatching method is a knowledge point of relevant Transportation Planning in colleges and universities' course, and the thought of its Computing Principle based on iteration, by the adjustment of route again and again, realizes in the trucking costs completing on relation between supply and demand basis minimum.The calculation procedure of table dispatching method is: first obtain initial Version Dispatching, then this initial Version Dispatching is carried out to optimality check, if not optimal case, just need Version Dispatching be adjusted and be improved, thereby draw new departure, check again, improve again, until obtain Optimal Version Dispatching, wherein, ask the method for initial Version Dispatching to have least member method, northwest corner method and three kinds of methods of Vogel method, Version Dispatching is carried out to optimality check and adjust improved method have closed loop method and two kinds of methods of potential method.
Based on this iteration thought, in traditional table dispatching method teaching practice, teacher need to be by teaching resources such as blackboard, chalks, manual picture has been shown teaching demonstration, need at least 4,5 tables of picture, need at most more than 10 tables of picture, due to classroom blackboard finite capacity, teacher needs continuous wiping to upgrade, simultaneously, the work of picture table has taken the more instructional blocks of time of teacher repeatedly, and, once calculating, teacher sucks a large amount of dust, the clothing of making dirty, also needs heavily to come when calculate next time again.In a word, expend instructional blocks of time many, blackboard is relied on greatly, many to chalk consumption, not environmental protection is large to teacher's health hazard.
Utility model content
The technical problems to be solved in the utility model be in prior art in table dispatching method teaching, teacher need to by the teaching resources such as blackboard, chalk by hand picture shown teaching demonstration, and the common number of form is a lot, due to classroom blackboard finite capacity, teacher needs continuous wiping to upgrade, and expends instructional blocks of time many, blackboard is relied on large, many to chalk consumption, not environmental protection is large to teacher's health hazard.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is as follows:
The teaching aid of the utility model table dispatching method, comprises calculation magnetic sheet, on calculation magnetic sheet, is provided with calculation form, on calculation form, is provided with several magnetic number blocks; In calculation magnetic sheet surrounding, be provided with bar shaped frame, described bar shaped frame is divided into the horizontal bar shaped frame of upper and lower correspondence and longitudinal bar shaped frame of left and right correspondence; On calculation magnetic sheet, be provided with occlusion part.When utilizing teaching aid to change in the past giving lessons of on table operation least member algorithm, need to manual picture, show by teaching resources such as blackboard, chalks the situation of teaching demonstration, and a teaching aid can meet the needed all forms of table dispatching method, no longer need continuous blackboard wiping to upgrade form, saved instructional blocks of time, avoid teacher to suck a large amount of dust, the clothing of making dirty, without chalk consumption.
Occlusion part of the present utility model can be, some groups of corresponding fixture and the some groups of fixtures that are arranged on the left and right correspondence on longitudinal bar shaped frame up and down that are arranged on horizontal bar shaped frame, and every group of fixture all connects by connecting line.Occlusion part, for the bar or the row that have calculated on calculation form are blocked, by the fixture of upper and lower correspondence and left and right correspondence is set, and arranges a connecting line on every group of fixture, when a row or column on calculation form has been calculated, connecting line is connected.
The utility model occlusion part can also be, is arranged on the transverse slipway on horizontal bar shaped frame and is arranged on the end slipway on longitudinal bar shaped frame, and end slipway and transverse slipway, not in same level, are provided with blend stop on transverse slipway and end slipway.Occlusion part is for blocking the bar or the row that have calculated on calculation form, by end slipway and transverse slipway are set, and on end slipway and transverse slipway, blend stop is set, when a row or column on calculation form has been calculated, blend stop is slided into and needs position along slideway.
As preferred version of the present utility model, magnetic number block is for writing the magnetic number block of wiping in surface.When needs are filled out numeral in calculation form, can write magnetic numeral upper surface, and be adsorbed onto the relevant position on calculation form, the digital erasable of writing, needs again to write according to calculation while using so that next again.
As preferred version of the present utility model, magnetic number block is that surface is the fixing magnetic number block of numeral.By upper surface being set for the fixing magnetic number block of numeral, when needs are filled out numeral in calculation form, can finding the magnetic number block of respective digital and be adsorbed onto the relevant position on calculation form.
As preferred version of the present utility model, the stationary digital of the magnetic number block that numeral is fixing is ten numerals of from 0 to 9.By stationary digital is arranged to unit numbers, when the double-digit numeral of needs, can look for two corresponding units blocks to carry out amalgamation, saved because magnetic number block is too much, look for inconvenient complicated processes.
As preferred version of the present utility model, the color of magnetic number block has two kinds, is respectively red magnetism digital block, black magnetic digital block.By being set, the magnetic number block of two kinds of different colours can distinguish the numeral of the difference in functionality type on calculation form, with more intuitive teaching demonstration.
As preferred version of the present utility model, the color of magnetic number block has three kinds, is respectively red magnetism digital block, black magnetic digital block and blue magnetic number block.By being set, the magnetic number block of three kinds of different colours can distinguish the numeral of the difference in functionality type on calculation form, with more intuitive teaching demonstration.
As preferred version of the present utility model, also comprise and be arranged on the magnetic sheet pole of the calculation left and right sides, magnetic sheet back and the magnetic sheet support plate of below, calculation magnetic sheet back.By magnetic sheet pole and magnetic sheet support plate are set, teaching aid can be placed on to plane or inclination or hang on facade, for example blackboard, is convenient to Student oriented demonstration.
As preferred version of the present utility model, bar shaped frame is wooden bar shaped frame, and fixture is drawing pin, and connecting line is elasticity line.Fixture plays the fixing effect of the two ends fulcrum of connecting line, and by fixture, be set to drawing pin it is cheap, draw materials conveniently, stationarity is good; By bar shaped frame, being set to wooden bar shaped frame, can to facilitate drawing pin to press fixing; By connecting line, be set to elasticity line, its shrinkability is good, and the drawing pin by elasticity line two ends can be arranged on the corresponding line of calculation form or list.
In sum, the utility model has the advantages that by adopting teaching aid, teacher has reduced to greatest extent the number of times of teacher's picture table when giving lessons, do not need continuous blackboard wiping to upgrade, avoid teacher to suck too much dust, avoided teacher's hand and clothing to be made dirty by chalk dust simultaneously, saved teacher's instructional blocks of time, changed and blackboard had been relied on to large defect in the past, economy, environmental protection, efficient.
Accompanying drawing explanation
Fig. 1 is the front view of the teaching aid embodiment 1 of the utility model table dispatching method.
Fig. 2 is the A portion enlarged drawing of the teaching aid embodiment 1 of the utility model table dispatching method.
Fig. 3 is the front view of the teaching aid embodiment 4 of the utility model table dispatching method.
Fig. 4 is the algorithm steps figure of the teaching aid embodiment 4 of the utility model table dispatching method.
Fig. 5 is the algorithm steps figure of the teaching aid embodiment 4 of the utility model table dispatching method.
Fig. 6 is the algorithm steps figure of the teaching aid embodiment 4 of the utility model table dispatching method.
Fig. 7 is the algorithm steps figure of the teaching aid embodiment 4 of the utility model table dispatching method.
Fig. 8 is the algorithm steps figure of the teaching aid embodiment 4 of the utility model table dispatching method.
Embodiment
Embodiment 1
As shown in Figure 1, 2, the teaching aid of the present embodiment table dispatching method, comprise calculation magnetic sheet 1, this calculation magnetic sheet 1 has certain magnetic, on calculation magnetic sheet 1, be provided with calculation form 2, the first trip of calculation form 2 is disposed with six client's lattice, one for amount lattice and line position gesture lattice, and first of calculation form 2 is disposed with three supplies quotient lattice, sales volume lattice and row potential lattice.Client's lattice and the corresponding freight volume lattice 11 of supply quotient lattice, be provided with freight charges lattice 12 on each freight volume lattice 11, freight charges lattice 12 are arranged on the upper left corner of freight volume lattice 11.
On calculation form 2, be provided with magnetic number block 3, magnetic number block 3 has certain magnetic and can be adsorbed on calculation magnetic sheet 1, the upper surface of magnetic number block 3 is fixedly installed numeral, this numeral is from 1 to 100 numeral, when needs are filled out numeral in calculation form, can find the magnetic number block 3 of respective digital and be adsorbed onto in freight volume lattice 11, freight charges lattice 12, confession amount lattice, sales volume lattice, line position gesture and the row potential on calculation form 2.
The numeral of inserting in freight volume lattice 11 is divided into freight volume number and check number, the color of freight volume number and check number can not be same color, magnetic number block has three kinds, be respectively red magnetism digital block, black magnetic digital block and blue magnetic number block, red magnetism digital block can represent freight volume number, blue magnetic number block can be expressed as check number, black magnetic digital block is used for representing all the other numerals, and the magnetic number block of multiple different colours can need to adsorb and place to distinguish according to calculation.
In calculation magnetic sheet 1 surrounding, be provided with bar shaped frame, bar shaped frame can be wooden bar shaped frame.The bar shaped frame of correspondence up and down in the 1 upper and lower sides setting of calculation magnetic sheet is horizontal bar shaped frame 4, at the bar shaped frame that calculates the left and right correspondence of magnetic sheet 1 left and right sides setting, is longitudinal bar shaped frame 5.
On calculation magnetic sheet 1, be provided with the occlusion part for the row or column of having calculated being blocked in calculation process, described occlusion part comprises the transverse slipway 8 being arranged on horizontal bar shaped frame 4 and is arranged on the end slipway 9 on longitudinal bar shaped frame 5, end slipway 9 and transverse slipway 8, not in same level, are provided with blend stop 10 on transverse slipway 8 and end slipway 9.Blend stop 10 can slide along slideway, when a row or column on calculation form has been calculated, blend stop 10 is slided into and needs position along slideway.
Embodiment 2
The structure of the teaching aid of the structure of the teaching aid of the present embodiment table dispatching method and embodiment 1 the present embodiment table dispatching method is basic identical, and its difference is, the stationary digital of magnetic number block upper surface is ten unit numbers of from 0 to 9.By stationary digital is arranged to unit numbers, when two of needs or long number digital, can look for two corresponding units blocks to carry out amalgamation, saved because magnetic number block is too much, look for inconvenient complicated processes.
Embodiment 3
The structure of the teaching aid of the structure of the teaching aid of the present embodiment table dispatching method and embodiment 1 the present embodiment table dispatching method is basic identical, and its difference is, at the magnetic sheet pole of the calculation left and right sides, magnetic sheet back and the magnetic sheet support plate below calculation magnetic sheet back.By magnetic sheet pole and magnetic sheet support plate are set, teaching aid can be placed on to plane or inclination or hang on facade, for example blackboard, is convenient to Student oriented demonstration.
Embodiment 4
As shown in Fig. 3 to 8, the teaching aid of the present embodiment table dispatching method, comprise calculation magnetic sheet 1, this calculation magnetic sheet 1 has certain magnetic, on calculation magnetic sheet 1, be provided with calculation form 2, the first trip of calculation form 2 is disposed with four client's lattice, one for amount lattice and line position gesture lattice, and first of calculation form 2 is disposed with three supplies quotient lattice, sales volume lattice and row potential lattice.Client's lattice and the corresponding freight volume lattice 11 of supply quotient lattice, be provided with freight charges lattice 12 on each freight volume lattice 11, freight charges lattice 12 are arranged on the upper right corner of freight volume lattice 11.
On calculation form 2, be provided with magnetic number block 3, magnetic number block 3 has certain magnetic and can be adsorbed on calculation magnetic sheet 1, and the upper surface of magnetic number block 3 can be write numeral with pen, also can carry out wiping change to numeral.Magnetic number block 3 can be adsorbed in freight volume lattice, freight charges lattice, confession amount lattice, sales volume lattice, line position gesture and the row potential of corresponding calculation form according to computing situation.
The numeral of inserting in freight volume lattice 11 is divided into freight volume number and check number, the color of freight volume number and check number can not be same color, magnetic number block 3 has two kinds, be respectively red magnetism digital block and black magnetic digital block, red magnetism digital block can represent freight volume number, black magnetic digital block is used for representing check number and remainder word thereof, and the magnetic number block of multiple different colours can need to adsorb and place to distinguish according to calculation.
In calculation magnetic sheet 1 surrounding, be provided with bar shaped frame, bar shaped frame can be wooden bar shaped frame.The bar shaped frame of correspondence up and down in the 1 upper and lower sides setting of calculation magnetic sheet is horizontal bar shaped frame 4, at the bar shaped frame that calculates the left and right correspondence of magnetic sheet 1 left and right sides setting, is longitudinal bar shaped frame 5.
On calculation magnetic sheet 1, be provided with the occlusion part for the row or column of having calculated being blocked in calculation process, described occlusion part comprises the fixture 6 of correspondence being up and down arranged on horizontal bar shaped frame 4, fixture 6 plays the fixing effect of the two ends fulcrum of connecting line 7, it can be drawing pin, it is cheap, draw materials conveniently, stationarity is good, and matches with wooden bar shaped frame that to facilitate drawing pin to press fixing.The fixture 6 of described upper and lower correspondence is four groups, one group of corresponding client's lattice of upper and lower corresponding fixture 6, four client's cases that the fixture of four groups of upper and lower correspondences is separately positioned on horizontal bar shaped frame 4 are put, on every group of upper and lower corresponding fixture 6, be provided with a connecting line 7, connecting line 7 is arranged on client's lattice in vertical mode.Connecting line 7 is that its shrinkability of elasticity line is good, and the drawing pin by elasticity line two ends can be arranged in the respective column of calculation form 2.
Longitudinally on bar shaped frame, be provided with fixture 6 corresponding to left and right, the fixture of described left and right correspondence is three groups, one group of one of 6 correspondence of fixing corresponding to left and right is supplied quotient lattice, the San Ge supplier case that the fixture 6 of three groups of left and right correspondences is separately positioned on longitudinal bar shaped frame 5 is put, on about every group corresponding fixture 6, be provided with a connecting line 7, connecting line 7 is arranged on supply quotient lattice with landscape mode.Connecting line 7 is that its shrinkability of elasticity line is good, and the drawing pin by elasticity line two ends can be arranged on the corresponding line of calculation form.
The application process of the teaching aid of the present embodiment table dispatching method:
San Ge supplier and four clients form 12 freight volume lattice 11 and 12 freight charges lattice 12 altogether, confession amount (being supply) S monthly of San Ge supplier
i(i=1,2,3 ..., m), four clients sales volume (being demand) D monthly
j(j=1,2,3 ..., n) and supplier to the trucking costs C of unit goods and materials between client
ij(i=1,2,3 ..., m; J=1,2,3 ..., n) known, and
known conditions is shown in Fig. 4.
The presentation process of the teaching aid of the present embodiment table dispatching method:
The first step: initially Version Dispatching determines.According to Fig. 4, relatively the trucking costs in 12 freight charges lattice 12, selects minimum trucking costs, knows more afterwards, and minimum trucking costs is C
21=1, this least cost C
21there are four unit products (for amount) in corresponding supplier 2, corresponding client's 1 demand (sales volume) is three unit products, first in freight volume lattice 11 the insides of supplier 2 and client's 1 intersection, put into red magnetism digital block 3 " 3 ", expression is 3 unit products of client's 1 dispensing by supplier 2, client's 1 column is coupled together with elasticity line 7, illustrate that required three unit products of client 1 are met completely, simultaneously, blue magnetic number block 3 " 1 " is put in amount " 4 " upper right corner that supplies in supplier 2, explanation, supplier is after being three unit products of client's 1 dispensing, residue stock is a unit product, then, in remaining nine freight charges lattice 12, least cost is C
23=2, this least cost C
23there is a unit product in corresponding supplier 2, corresponding client's 3 demands are five unit products, red magnetism digital block 3 " 1 " is put in freight volume lattice 11 the insides in supplier 2 and client's 3 intersections, expression is unit products of client's 3 dispensings by supplier 2, supplier's 2 be expert ats are coupled together with elasticity line 7, the all inventories of supplier 2 provide and deliver away (step that elasticity line is coupled together the also blend stop of available embodiment 1 is blocked, identical with the effect of elasticity line) are described.
According to above-mentioned rule, according to the principle of " being preferably the corresponding client's dispensing of least cost ", with elasticity line 7, connect row or column, until San Ge supplier's the amount that supplies is is all provided and delivered away, four clients' demand is all met, and finally forms initial Version Dispatching, specifically, X
13=4, X
14=3, X
21=3, X
23=1, X
32=6, X
34=4 (X
ijbeing expressed as i supplier is the allocation and transportation amount of j client's dispensing, i.e. red magnetism digital block), see Fig. 5.Total expenses TC=4 * 3+3 * 10+3 * 1+1 * 2+6 * 4+3 * the 5=86 of initial Version Dispatching.
Second step: application potential method is tested to initial Version Dispatching.First, the elasticity line 7 that Fig. 5 is connected resets, according to potential formula U
i+ V
j=C
ij(i=1,2,3 ..., m; J=1,2,3 ..., n, wherein U
ifor line position gesture, V
jfor row potential) and known conditions U
1=0, can obtain line position gesture U
2=-1, U
3=-5 and row potential V
1=2, V
2=9, V
3=9, V
4=10; Then, according to check number formula γ
ij=C
ij-U
i-V
j(γ
ijfor check number), the check number that can obtain allocation and transportation amount above---red magnetism digital block 3---freight volume lattice 11 in addition, is shown in Fig. 6, check number is respectively γ
11=1, γ
12=2, γ
22=1, γ
24=-1, γ
31=10, γ
33=12.According to " minimizing necessary and sufficient condition is check number γ
ij>=0 " principle is known, due to γ
24=-1 < 0, initial Version Dispatching is not the optimal case of total Transportation Expenditure minimum, needs application closed loop method to adjust initial Version Dispatching, enters the 3rd step.
The 3rd step: application closed loop method is adjusted initial Version Dispatching.By γ
24=-1, X
14=3, X
13=4 and X
23=1 forms closed loop, according to table dispatching method correlation theory, initial Version Dispatching is adjusted, and the Version Dispatching after adjustment is shown in Fig. 7.
The 4th step: application potential method is tested to the Version Dispatching after adjusting.Principle is identical with " second step ".Assay is shown in Fig. 8, and check number is respectively γ
11=0, γ
12=2, γ
22=2, γ
23=1, γ
31=9, γ
33=12, according to " minimizing necessary and sufficient condition is check number γ
ij>=0 principle knows, the Version Dispatching after adjustment is the optimal case of total Transportation Expenditure minimum, specifically, and X
13=5, X
14=2, X
21=3, X
24=1, X
32=6, X
34=3, the total expenses TC of Optimal Version Dispatching
*=5 * 3+2 * 10+3 * 1+1 * 8+6 * 4+3 * 5=85.
In the teaching application of the utility model teaching aid, in class of teach two classes () and (two) class, do the example shown in Fig. 2 respectively, (1) class adopts manual method of drawing table on blackboard, (2) class adopts the teaching aid of the utility model least member algorithm to calculate to this example, instructional blocks of time used, chalk consumption under two kinds of methods are added up, and data gather and see attached list 1.
Subordinate list 1:(mono-) class and (two) class instructional blocks of time used, chalk consumption reduced time unit: second
| ? | Fig. 2 | Fig. 3 | Fig. 4 | Fig. 5 | Fig. 6 | Chalk consumption |
| The manual table (a class) of drawing | 190 | 380 | 550 | 870 | 1130 | 5.5 |
| Adopt this teaching aid (two classes) | 26 | 56 | 98 | 113 | 145 | 0.1 |
From subordinate list 1, complete under the prerequisite of identical teaching process and target, (one) class's calculation time used is 1130 seconds, nearly 19 minutes, consume 5.5, chalk, (two) class's calculation time used is 145 seconds, about 2.5 minutes, consumes 0.1, chalk.By contrast, know, adopt this teaching aid utility model greatly to shorten instructional blocks of time, saved expense of instruction; Further, if algorithm more complicated (being that supplier or client are more) or topic example calculation number of times are more, the utility model is more obvious in the advantage of saving time, reduce the aspects such as chalk consumption and environmental protection.
Below by reference to the accompanying drawings preferred implementation of the present utility model is described in detail, but the utility model is not limited to above-mentioned embodiment, for example fixture is not limited to drawing pin, can adopt other parts that can realize identical function to replace, equally, freight charges lattice can be arranged on any position in freight volume lattice, in a word, in the ken possessing affiliated technical field technician, can also under the prerequisite that does not depart from the utility model aim, make various variations.
Claims (10)
1. a teaching aid for table dispatching method, is characterized in that: comprise calculation magnetic sheet (1), be provided with calculation form (2) on calculation magnetic sheet (1), on calculation form (2), be provided with several magnetic number blocks (3); In calculation magnetic sheet (1) surrounding, be provided with bar shaped frame, described bar shaped frame is divided into the horizontal bar shaped frame (4) of upper and lower correspondence and longitudinal bar shaped frame (5) of left and right correspondence; On calculation magnetic sheet (1), be provided with occlusion part.
2. the teaching aid of table dispatching method according to claim 1, it is characterized in that: described occlusion part comprises some groups of fixture (6) and the some groups of fixtures (6) that are arranged on the left and right correspondence on longitudinal bar shaped frame (5) of correspondence up and down that are arranged on horizontal bar shaped frame (4), and every group of fixture (6) all connects by connecting line (7).
3. the teaching aid of table dispatching method according to claim 1, it is characterized in that: described occlusion part comprises the transverse slipway (8) being arranged on horizontal bar shaped frame (4) and is arranged on the end slipway (9) on longitudinal bar shaped frame (5), end slipway (8) and transverse slipway (9), not in same level, are provided with blend stop (10) on transverse slipway (9) and end slipway (8).
4. the teaching aid of table dispatching method according to claim 1, is characterized in that: described magnetic number block (3) is for writing the magnetic number block of wiping in surface.
5. the teaching aid of table dispatching method according to claim 1, is characterized in that: described magnetic number block (3) is that surface is the fixing magnetic number block of numeral.
6. the teaching aid of table dispatching method according to claim 5, is characterized in that: ten numerals that the stationary digital of the magnetic number block that described numeral is fixing is from 0 to 9.
7. the teaching aid of table dispatching method according to claim 1, is characterized in that: the color of described magnetic number block (3) has two kinds, is respectively red magnetism digital block, black magnetic digital block.
8. the teaching aid of table dispatching method according to claim 1, is characterized in that: the color of described magnetic number block (3) has three kinds, is respectively red magnetism digital block, black magnetic digital block and blue magnetic number block.
9. the teaching aid of table dispatching method according to claim 1, is characterized in that: also comprise and be arranged on the magnetic sheet pole of calculation magnetic sheet (1) left and right sides, back and the magnetic sheet support plate of below, calculation magnetic sheet back.
10. the teaching aid of table dispatching method according to claim 2, is characterized in that: described bar shaped frame is wooden bar shaped frame, and fixture (6) is drawing pin, and connecting line (7) is elasticity line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370177.6U CN203966386U (en) | 2014-07-07 | 2014-07-07 | The teaching aid of table dispatching method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370177.6U CN203966386U (en) | 2014-07-07 | 2014-07-07 | The teaching aid of table dispatching method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203966386U true CN203966386U (en) | 2014-11-26 |
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ID=51926942
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|---|---|---|---|
| CN201420370177.6U Expired - Fee Related CN203966386U (en) | 2014-07-07 | 2014-07-07 | The teaching aid of table dispatching method |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104077939A (en) * | 2014-07-07 | 2014-10-01 | 河南工程学院 | Teaching aid for table dispatching method |
-
2014
- 2014-07-07 CN CN201420370177.6U patent/CN203966386U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104077939A (en) * | 2014-07-07 | 2014-10-01 | 河南工程学院 | Teaching aid for table dispatching method |
| CN104077939B (en) * | 2014-07-07 | 2017-02-15 | 河南工程学院 | Teaching aid for table dispatching method |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20170707 |