CN211555129U - Auxiliary English word memory device - Google Patents
Auxiliary English word memory device Download PDFInfo
- Publication number
- CN211555129U CN211555129U CN202020391993.0U CN202020391993U CN211555129U CN 211555129 U CN211555129 U CN 211555129U CN 202020391993 U CN202020391993 U CN 202020391993U CN 211555129 U CN211555129 U CN 211555129U
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- protection box
- english word
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- memory device
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- 239000004744 fabric Substances 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000013013 elastic material Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
English word auxiliary memory device, including the first spliced pole, a plurality of detachable second spliced poles are installed on the right side of first spliced pole, the surface of first spliced pole and second spliced pole rotates respectively and is connected with the alphabetical wheel, both sides are provided with the mounting panel around the alphabetical wheel upside, the upper end of two mounting panels all fixedly connected with prompt board, the left end of prompt board all articulates there is the installing frame that can overturn, the inboard of installing frame all installs mobilizable sheltering cloth; the user can carry out the concatenation combination through rotating the alphabetical wheel when recalling english word through observing chinese translation, the trouble and the unnecessary waste of having avoided the user to write by hand, the user can send the sound that the flexure strip struck the draw-in groove when rotating the alphabetical wheel, improve liking of user to this device, can improve the enthusiasm that the user initiatively studied, the second spliced pole all can be dismantled, the user can dismantle and assemble the alphabetical wheel through the number of letters of the word that needs spell when needing, application scope is wide.
Description
Technical Field
The utility model belongs to study auxiliary equipment field, concretely relates to english word assists memory device.
Background
In the process of English learning, reciting English words is very important, and reciting English words does not have any shortcut except that students do important study and memory in study and life, but at present students can still divide time in study for memorizing words, but for some students with weak memory, it is often not enough to just can divide time in the process of study to recit words, but can't convenient reciting and memory anytime and anywhere in life, and reciting words is a very boring process, and the students produce tired psychology when very easy, and are not favorable to students' study.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming prior art's defect, the utility model provides an english word auxiliary memory device can help the student to remember the word at any time in the life, portable to convenience simple to use, interesting strong, the effectual problem of mentioning in having solved above-mentioned background art.
In order to solve the above problems, the utility model adopts the following technical proposal:
memory device is assisted to english word, including first spliced pole, a plurality of detachable second spliced poles are installed on the right side of first spliced pole, the surface of first spliced pole and second spliced pole is rotated respectively and is connected with the alphabetical wheel, both sides all are provided with the mounting panel around the alphabetical wheel upside, two the equal fixedly connected with prompt board in upper end of mounting panel, the left end of prompt board all articulates there is the installing frame that can overturn, mobilizable blocking cloth is all installed to the inboard of installing frame.
Preferably, the inner sides of the mounting frames are both slidably connected with outer cylinders capable of moving left and right, inner shafts capable of rotating in a single direction are mounted in the outer cylinders, the shielding cloth is wound on the surfaces of the inner shafts, and the inner ends of the shielding cloth are fixedly connected with the inner shafts; the outer sides of the mounting frames are respectively provided with a first protection box, the outer end surface of the first protection box is fixedly connected with a second protection box, the first protection boxes are respectively fixedly connected with the outer barrel, the outer end of the inner shaft outwards penetrates through the first protection box, and the outer end of the inner shaft is rotatably connected with the inner wall of the second protection box; coil springs are arranged in the first protection box, and the inner end and the outer end of each coil spring are fixedly connected with the surface of the inner shaft and the inner wall of the first protection box respectively; and the second protection boxes are internally provided with braking mechanisms capable of controlling the inner shaft to rotate in a single direction.
Preferably, the braking mechanism comprises a ratchet wheel which is fixedly connected with the surface of the inner shaft; a pawl is meshed with the outer side of the ratchet wheel, a return spring is arranged on the surface of the outer end of the pawl, and two ends of the return spring are fixedly connected with the surface of the pawl and the inner wall of the second protection box respectively; the second protection box is rotatably connected with a rotating plate, push rods are hinged to the upper side and the lower side of the surface of the rotating plate, the outer ends of the push rods are hinged to the pawls, and a structure that the pawls are disengaged from the ratchet wheel can be formed by rotating the rotating plate.
Preferably, the outer ends of the shielding cloth penetrate through the outer cylinder and extend to the outer side of the outer cylinder, and the outer ends of the shielding cloth are fixedly connected with an outer shaft; the outer shaft and the outer barrel are fixedly connected with first sliding blocks at two ends respectively, first sliding grooves are formed in the inner wall of the mounting frame corresponding to the first sliding blocks, the first sliding blocks are connected with the first sliding grooves in a sliding mode, and the first sliding blocks are connected with the inner shaft in a fixed and rotating mode.
Preferably, the right end of the first connecting column is fixedly connected with a first threaded sleeve, the left ends of the second connecting columns are fixedly connected with threaded columns, the first connecting column and the adjacent second threaded column on the left side are connected through the threaded connection of the first threaded sleeve and the threaded columns, the right end of the second connecting shaft is fixedly connected with a connecting knob, and the connecting knob is in threaded connection with the threaded column corresponding to the right side; clamping grooves are formed in the circumferential surfaces of the first connecting column and the second connecting column, elastic sheets are meshed in the clamping grooves, and the elastic sheets are fixedly connected with the letter wheel; the left end fixedly connected with connecting plate of first connecting column, the upper end of connecting plate with two mounting panel fixed connection, the left end fixedly connected with handle of connecting plate.
Preferably, the right end fixedly connected with buckle of installing frame, the right-hand member fixed surface of prompting board be connected with can with buckle complex fixture block, the installing frame passes through buckle and fixture block cooperation are fixed the prompting board upper end, equal fixedly connected with rubber pad in both sides around the lower extreme of installing frame.
Preferably, the upper end surface of the mounting plate is provided with a rectangular perspective window.
The utility model discloses novel structure, think about ingenious, easy operation is convenient, compares with prior art and has following advantage:
the device is simple and convenient to use and convenient to carry, English words for prompt and paper slips of Chinese translation corresponding to the words can be made in advance when the device is used, the paper slips are fixed on the surface of the prompt board, the English words are shielded through shielding cloth, the shielding cloth can be moved and adjusted in length according to the requirements of a user, the device is convenient for the user to use, the user can splice and combine the English words by observing the Chinese translation and rotating the letter wheel, the trouble of handwriting and unnecessary waste of the user are avoided, the user can send sound of striking the clamping groove by the elastic sheet when rotating the letter wheel, the enjoyment of the user to the device is improved, the initiative of active learning of the user can be improved, the device is simple to operate and convenient to use, the second connecting columns can be detached, and the letter wheel can be detached and assembled by the number of letters of the words to be spelled when the user needs, the application range is wide.
Drawings
Fig. 1 is the overall structure schematic diagram of the english word auxiliary memory device of the present invention.
Fig. 2 is a schematic view of the overlooking structure of the english word auxiliary memory device of the present invention.
Fig. 3 is the first schematic diagram of the letter wheel connecting structure of the english word auxiliary memory device of the present invention.
Fig. 4 is a second schematic view of the letter wheel connection structure of the english word auxiliary memory device of the present invention.
Fig. 5 is the schematic view of the connection structure of the clamping groove and the elastic sheet of the auxiliary memory device for english words of the present invention.
Fig. 6 is the schematic diagram of the prompting board structure of the auxiliary memory device for english words of the present invention.
Fig. 7 is the utility model discloses a memory device is assisted to english word's installing frame flip structure schematic diagram.
Fig. 8 is the internal structure diagram of the first protection box of the auxiliary memory device for english words of the present invention.
Fig. 9 is the internal structure diagram of the second protection box of the auxiliary memory device for english words of the present invention.
In the figure: 1-a first connecting column, 2-a first thread bushing, 3-a second connecting column, 4-a threaded column, 5-a connecting knob, 6-a letter wheel, 7-a connecting plate, 8-a prompt plate, 9-a mounting frame, 10-a clamping groove, 11-an elastic sheet, 12-a buckle, 13-a clamping block, 14-an inner shaft, 15-a first sliding block, 16-a coil spring, 17-a ratchet wheel, 18-a reset spring, 19-a push rod, 20-a pawl, 21-a knob, 22-a rotating plate, 23-a first protection box, 24-a second protection box, 25-an outer shaft, 26-a shielding cloth, 27-an outer cylinder, 28-a perspective window, 29-a mounting plate and 30-a handle.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-9, the utility model provides an english word auxiliary memory device, including first spliced pole 1, a plurality of detachable second spliced poles 3 are installed to the right side of first spliced pole 1, the surface of first spliced pole 1 and second spliced pole 3 is rotated respectively and is connected with alphabetical wheel 6, both sides all are provided with mounting panel 29, two around the 6 upside of alphabetical wheel the equal fixedly connected with in upper end of mounting panel 29 prompts board 8, the left end of prompting board 8 all articulates there is the installing frame 9 that can overturn, mobilizable blocking cloth 26 is all installed to the inboard of installing frame 9.
This device can be done the english word of suggestion usefulness and the note with the corresponding chinese translation of word in advance when using, and place the note at 8 fixed with the installing frame 9 on the surface of suggestion board, it is used for the user to shelter from when remembering the word to shelter from cloth 26 and is used for the english word, the person of facilitating the use makes a round trip to remember the english word through chinese translation, the circumference surface of letter wheel 6 is provided with twenty six english letters, the user can splice the combination through rotating letter wheel 6 when recalling the english word, and is simple in operation, high durability and convenient use, and all can dismantle second spliced pole 3, the letter number of the word that the user can spell when needing is dismantled and equipment letter wheel 6, and application scope is wide.
The inner sides of the mounting frames 9 are both slidably connected with outer cylinders 27 capable of moving left and right, inner shafts 14 capable of rotating in a single direction are mounted in the outer cylinders 27, the shielding cloth 26 is wound on the surfaces of the inner shafts 14, and the inner ends of the shielding cloth 26 are fixedly connected with the inner shafts 14; a first protection box 23 is mounted on the outer side of the mounting frame 9, a second protection box 24 is fixedly connected to the outer end surface of the first protection box 23, the first protection box 23 is fixedly connected with the outer cylinder 27, the outer end of the inner shaft 14 outwards penetrates through the first protection box 23, and the outer end of the inner shaft 14 is rotatably connected with the inner wall of the second protection box 24; the first protection box 23 is internally provided with coil springs 16, and the inner ends and the outer ends of the coil springs 16 are respectively and sequentially fixedly connected with the surface of the inner shaft 14 and the inner wall of the first protection box 23; the second protection boxes 24 are respectively provided with a brake mechanism which can control the inner shaft 14 to rotate in one direction.
The brake mechanism comprises a ratchet wheel 17, and the ratchet wheel 17 is fixedly connected to the surface of the inner shaft 14; a pawl 20 is meshed with the outer side of the ratchet wheel 17, a return spring 18 is arranged on the outer end surface of the pawl 20, and two ends of the return spring 18 are fixedly connected with the surface of the pawl 20 and the inner wall of the second protection box 24 respectively; the second protection box 24 is rotatably connected with a rotating plate 22, push rods 19 are hinged to the upper side and the lower side of the surface of the rotating plate 22, the outer ends of the push rods 19 are hinged to the pawls 20, and a structure that the pawls 20 are disengaged from the ratchet wheel 17 can be formed by the rotation of the rotating plate 22.
The first protection box 23 and the second protection box 24 are respectively used for protecting the coil spring 16 and the brake mechanism in sequence, the inner shaft 14 can only rotate in a single direction under the action of the brake structure in the inner shaft 14, the inner shaft 14 can rotate and the coil spring 16 can contract when the shielding cloth 26 is pulled outwards so as to adjust the length of the shielding cloth 26, a user can adjust the length of the shielding cloth 26 according to the length of English words, the outer cylinder 27 is used for accommodating the shielding cloth 26, the inner shaft 14 rotates and drives the ratchet wheel 17 to rotate when the shielding cloth 26 is pulled outwards, the ratchet wheel 17 cannot reverse under the action of the pawl 20, the coil spring 16 continuously contracts, the rotating plate 22 can be controlled to rotate when the shielding cloth 26 needs to be retracted into the outer cylinder 27, the pawl 20 is pushed by the push rod 19 to be disengaged from the ratchet wheel 17 and the reset spring 18 is compressed when the rotating plate 22 rotates, and the inner shaft 14 can reverse under the action of the coil spring 16 and retracts the shielding cloth 26 into the outer cylinder 27 after the pawl 20 is disengaged The outer ends of the rotating plates 22 are fixedly connected with connecting shafts, the outer ends of the connecting shafts penetrate through the second protective box 24, the outer ends of the connecting shafts are fixedly connected with knobs 21, the knobs 21 are used for assisting a user to control the rotating plates 22 to rotate, and when the knobs 21 are loosened, the pawls 20 can be meshed with the ratchet wheels 17 again under the action of the return springs 18.
The outer ends of the shielding cloth 26 penetrate through the outer cylinder 27 and extend to the outer side of the outer cylinder 27, and the outer ends of the shielding cloth 26 are fixedly connected with an outer shaft 25; both ends of the outer shaft 25 and the outer cylinder 27 are fixedly connected with first sliding blocks 15, first sliding grooves are formed in the inner wall of the mounting frame 9 corresponding to the first sliding blocks 15, the first sliding blocks 15 are connected with the first sliding grooves in a sliding mode, and the first sliding blocks 15 are fixedly and rotatably connected with the inner shaft 14.
The first slider 15 is used to assist the outer shaft 25 and the outer cylinder 27 to move, and the outer shaft 25 is used to assist the user to pull the shielding cloth 26, so that the user can adjust the length of the shielding cloth 26 conveniently.
The right end of the first connecting column 1 is fixedly connected with a first threaded sleeve 2, the left ends of the second connecting columns 3 are fixedly connected with threaded columns 4, the first connecting column 1 and the adjacent second threaded column 4 on the left side are connected through the threaded connection of the first threaded sleeve 2 and the threaded columns 4, the right end of each second connecting shaft is fixedly connected with a connecting knob 5, and the connecting knobs 5 are connected with the corresponding threaded columns 4 on the right side through threads; clamping grooves 10 are formed in the circumferential surfaces of the first connecting column 1 and the second connecting column 3, elastic pieces 11 are meshed in the clamping grooves 10, and the elastic pieces 11 are fixedly connected with the letter wheel 6; the left end fixedly connected with connecting plate 7 of first connecting column 1, the upper end and two of connecting plate 7 mounting panel 29 fixed connection, the left end fixedly connected with handle 30 of connecting plate 7.
The user can stretch into handle 30 fixed mounting panel 29 with the hand when using this device, then dismantle through the mounting box that rotates connection knob 5 and accomplish alphabetical wheel 6, handle 30 surface is provided with the rubber inoxidizing coating, a hand for protecting the patient, alphabetical wheel 6 can be fixed temporarily to the cooperation of flexure strip 11 and draw-in groove 10, and flexure strip 11 can be continuous when rotating alphabetical wheel 6 mesh with draw-in groove 10 and hit and beat draw-in groove 10 and make the sound, improve the interest of this device, improve the enthusiasm of user's use this device, strengthen the ability that the user initiatively studied, flexure strip 11 can adopt durable elastic material to make, elasticity and life-span with improvement flexure strip 11.
The right-hand member fixedly connected with buckle 12 of installing frame 9, the right-hand member fixed surface of prompt board 8 be connected with can with buckle 12 complex fixture block 13, installing frame 9 passes through buckle 12 and fixture block 13 cooperation are fixed prompt board 8 upper end, equal fixedly connected with rubber pad in both sides around the lower extreme of installing frame 9.
The upper end surface of the mounting plate 29 is provided with a rectangular perspective window 28.
The user can view the combined english words through the see-through window 28 while rotating the letter wheel 6.
The utility model discloses a working process does:
the utility model discloses when using, can do the english word of suggestion usefulness in advance and the note with the corresponding chinese translation of word to place the note at 8 fixed for the surface mounting frame 9 of prompt board, then insert the left hand in handle 30, rotate the alphabet wheel 6 through both hands and practise the english word, can stimulate to block cloth 26 and block the english word when the english word memory is skilled back, detect the accuracy of memory with the english word combination through looking over the chinese translation.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or scope of the invention as defined in the appended claims.
Claims (7)
1. English word auxiliary memory device, including first connector post (1), its characterized in that: a plurality of detachable second spliced poles (3) are installed on the right side of first spliced pole (1), the surface of first spliced pole (1) and second spliced pole (3) is rotated respectively and is connected with alphabetical wheel (6), both sides all are provided with mounting panel (29), two around the alphabetical wheel (6) upside the equal fixedly connected with in upper end prompt board (8) of mounting panel (29), the left end of prompt board (8) all articulates there is installing frame (9) that can overturn, mobilizable blocking cloth (26) are all installed to the inboard of installing frame (9).
2. The english word auxiliary memory device according to claim 1, wherein: the inner sides of the mounting frames (9) are respectively connected with an outer cylinder (27) capable of moving left and right in a sliding manner, inner shafts (14) capable of rotating in a single direction are respectively mounted in the outer cylinders (27), the shielding cloth (26) is wound on the surfaces of the inner shafts (14), and the inner ends of the shielding cloth (26) are fixedly connected with the inner shafts (14); a first protection box (23) is mounted on the outer side of the mounting frame (9), a second protection box (24) is fixedly connected to the outer end surface of the first protection box (23), the first protection box (23) is fixedly connected with the outer cylinder (27), the outer end of the inner shaft (14) outwards penetrates through the first protection box (23), and the outer end of the inner shaft (14) is rotatably connected with the inner wall of the second protection box (24); coil springs (16) are arranged in the first protection boxes (23), and the inner ends and the outer ends of the coil springs (16) are respectively and sequentially fixedly connected with the surface of the inner shaft (14) and the inner wall of the first protection box (23); and braking mechanisms capable of controlling the inner shaft (14) to rotate in one direction are arranged in the second protection boxes (24).
3. The english word auxiliary memory device according to claim 2, wherein: the brake mechanism comprises a ratchet wheel (17), and the ratchet wheel (17) is fixedly connected to the surface of the inner shaft (14); a pawl (20) is meshed with the outer side of the ratchet wheel (17), a return spring (18) is arranged on the outer end surface of the pawl (20), and two ends of the return spring (18) are fixedly connected with the surface of the pawl (20) and the inner wall of the second protection box (24) respectively; the second protection box (24) is rotatably connected with a rotating plate (22), push rods (19) are hinged to the upper side and the lower side of the surface of the rotating plate (22), the outer ends of the push rods (19) are hinged to the pawl (20), and the pawl (20) and the ratchet wheel (17) can be disengaged through rotation of the rotating plate (22).
4. The english word auxiliary memory device according to claim 2, wherein: the outer ends of the shielding cloth (26) penetrate through the outer cylinder (27) and extend to the outer side of the outer cylinder (27), and the outer ends of the shielding cloth (26) are fixedly connected with an outer shaft (25); the outer shaft (25) and the two ends of the outer cylinder (27) are fixedly connected with first sliding blocks (15), first sliding grooves are formed in the inner wall of the mounting frame (9) corresponding to the first sliding blocks (15), the first sliding blocks (15) are connected with the first sliding grooves in a sliding mode, and the first sliding blocks (15) are connected with the inner shaft (14) in a fixed rotating mode.
5. The english word auxiliary memory device according to claim 1, wherein: the right end of the first connecting column (1) is fixedly connected with a first threaded sleeve (2), the left ends of the second connecting columns (3) are fixedly connected with threaded columns (4), the first connecting column (1) and a second threaded column (4) adjacent to the left side are connected through the first threaded sleeve (2) and the threaded columns (4) in a threaded connection mode, the right end of the second connecting shaft is fixedly connected with a connecting knob (5), and the connecting knob (5) is in threaded connection with the threaded column (4) corresponding to the right side; clamping grooves (10) are formed in the circumferential surfaces of the first connecting column (1) and the second connecting column (3), elastic sheets (11) are meshed in the clamping grooves (10), and the elastic sheets (11) are fixedly connected with the letter wheels (6); the left end fixedly connected with connecting plate (7) of first connecting column (1), the upper end and two of connecting plate (7) mounting panel (29) fixed connection, the left end fixedly connected with handle (30) of connecting plate (7).
6. The english word auxiliary memory device according to claim 1, wherein: the right-hand member fixedly connected with buckle (12) of installing frame (9), the right-hand member fixed surface of prompt board (8) be connected with can with buckle (12) complex fixture block (13), installing frame (9) are passed through buckle (12) and fixture block (13) cooperation are fixed prompt board (8) upper end, the equal fixedly connected with rubber pad in both sides around the lower extreme of installing frame (9).
7. The english word auxiliary memory device according to claim 1, wherein: the upper end surface of the mounting plate (29) is provided with a rectangular perspective window (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020391993.0U CN211555129U (en) | 2020-03-24 | 2020-03-24 | Auxiliary English word memory device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020391993.0U CN211555129U (en) | 2020-03-24 | 2020-03-24 | Auxiliary English word memory device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211555129U true CN211555129U (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020391993.0U Expired - Fee Related CN211555129U (en) | 2020-03-24 | 2020-03-24 | Auxiliary English word memory device |
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| Country | Link |
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| CN (1) | CN211555129U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112102652A (en) * | 2020-10-10 | 2020-12-18 | 河南经贸职业学院 | Learning device suitable for professional study of industrial and commercial management |
| CN112509429A (en) * | 2020-12-24 | 2021-03-16 | 林小娜 | Training system for enhancing memory |
| CN113539023A (en) * | 2021-08-04 | 2021-10-22 | 兰州大学 | Economic management professional term memory device |
| CN114220298A (en) * | 2021-12-17 | 2022-03-22 | 赣州市第一中学 | English specialty is with supplementary memory device of word |
| CN115148074A (en) * | 2022-08-04 | 2022-10-04 | 黑龙江工程学院 | English translation exercise device and using method |
-
2020
- 2020-03-24 CN CN202020391993.0U patent/CN211555129U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112102652A (en) * | 2020-10-10 | 2020-12-18 | 河南经贸职业学院 | Learning device suitable for professional study of industrial and commercial management |
| CN112102652B (en) * | 2020-10-10 | 2022-03-25 | 河南经贸职业学院 | Learning device suitable for professional study of industrial and commercial management |
| CN112509429A (en) * | 2020-12-24 | 2021-03-16 | 林小娜 | Training system for enhancing memory |
| CN112509429B (en) * | 2020-12-24 | 2023-11-24 | 云阳县路阳镇路阳小学 | Training system for enhancing memory |
| CN113539023A (en) * | 2021-08-04 | 2021-10-22 | 兰州大学 | Economic management professional term memory device |
| CN114220298A (en) * | 2021-12-17 | 2022-03-22 | 赣州市第一中学 | English specialty is with supplementary memory device of word |
| CN115148074A (en) * | 2022-08-04 | 2022-10-04 | 黑龙江工程学院 | English translation exercise device and using method |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20200922 |