CN208502668U - Mud and core separator - Google Patents
Mud and core separator Download PDFInfo
- Publication number
- CN208502668U CN208502668U CN201821040032.4U CN201821040032U CN208502668U CN 208502668 U CN208502668 U CN 208502668U CN 201821040032 U CN201821040032 U CN 201821040032U CN 208502668 U CN208502668 U CN 208502668U
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- CN
- China
- Prior art keywords
- drill bit
- pipe
- interconnecting piece
- main drilling
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of mud and core separator, it is related to boring mechanic technical field, its key points of the technical solution are that including main drilling pipe, drill bit is installed on main drilling pipe, main drilling pipe is integrally in long tube type, and whole drill bit is also in long tube type, is provided with the interconnecting piece connecting with main drilling pipe on drill bit, interconnecting piece is set as solid cylindricality, and multiple slurry outlets for being circumferentially equally spaced along interconnecting piece and being used to for moisture in mud being discharged are offered on interconnecting piece.The utility model solves the core generated in boring procedure and is contacted with mud always, core is immersed in the problem in mud for a long time, so that the core generated when drilling is convenient for separating with mud, so that the core taken out has higher hardness to detect convenient for testing staff.
Description
Technical field
The utility model relates to boring mechanic technical field, in particular to a kind of mud and core separator.
Background technique
Core is the needs according to geological work or engineering, using core ring bit and other coring tools, out of hole
The cylindric rock sample taken out.Core is research and the important material in kind for understanding subsurface geology and mineral products situation.
Authorization Notice No. is that the Chinese patent of CN203685035U discloses a kind of core drill bit structure, including main drilling rod,
With main drilling rod by the core pipe connector of taper screwed connection, with core pipe connector by the core barrel of screwed connection,
It is installed on the brill tooth of core barrel bottom end, it is oblique to be equipped with anti-mouth identical with core barrel outer diameter above the core pipe connector
The upper surface of pipe, the anti-mouth association control is opened wide, and forms the circle of a sealed bottom by screwed connection with core pipe connector below
Cylinder, the tube wall upper end of the anti-mouth inclined tube is inclined, and the angle of inclined-plane and horizontal plane is 35-45 degree.The core drill bit knot
The anti-mouth inclined tube of structure can play the role of the rubble or other hard objects that storage drilling top is fallen, and can effectively prevent falling object card
The tube wall upper end of dead drill bit, anti-mouth inclined tube is inclined, can make drill bit revolution it is smooth, be conducive to deslagging, improve probing
Mechanical drilling efficiency, and reduce the use cost of core drill bit.
Although above-mentioned patent can be improved the drilling efficiency of boring mechanic, but the core generated in boring procedure is always
It is contacted with mud, core is immersed in mud for a long time, it is thus possible to which the hardness that will lead to the core sample of taking-up is opposite
It is softer, columnar structure can not be formed, so that testing staff is relatively difficult when detecting.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of mud to separate dress with core
It sets, so that the core generated when drilling is convenient for separating with mud, so that the core taken out has higher hardness convenient for testing staff
It is detected.
The above-mentioned purpose of the utility model has the technical scheme that
A kind of mud and core separator, including main drilling pipe are equipped with drill bit on main drilling pipe, and main drilling pipe is integrally in long tube
Type, whole drill bit is also in long tube type, is provided with the interconnecting piece connecting with main drilling pipe on drill bit, interconnecting piece is set as solid column
Shape, and multiple pulps for being circumferentially equally spaced along interconnecting piece and being used to for moisture in mud being discharged are offered on interconnecting piece
Hole.
By using above-mentioned technical proposal, when in use, first drill bit and main drilling pipe are installed together, then by main drilling pipe
One end far from drill bit is mounted on drilling machine, and is after the installation is completed being arranged vertically drill bit with the position to drill is needed, thus
Complete the work that equipment prepares.Following staff starts drilling machine, and brill tooth and ground face contact on drill bit bore tooth and bore ground
It opens, and drives main drilling pipe to rotate on one side in drilling machine and main drilling pipe is pushed, so that drill bit and main drilling pipe constantly decline and insert
Enter in ground, and opened in insertion for the ease of boring ground, is generally sprayed at the position of drilling and increases soil wettability
Water bury so that drill bit is more convenient.During drill bit constantly declines, the soil or sandstone drilled out enters in drill bit,
Core is formed, and mud and core enter in drill bit together.In order to enable the core generated in drill bit is easier to be convenient for detecting
Personnel use, and set solid cylindricality for interconnecting piece, and offer on interconnecting piece multiple along the circumferentially equidistant cloth of interconnecting piece
The slurry outlet set, when installing drill bit on main drilling pipe, main drilling pipe is connected to by slurry outlet with drill bit, so that the drill bit in drilling
In the mistake that constantly declines in drill bit of the core water that will not be entered in main drilling pipe by interconnecting piece, and be mixed in core and mud
Cheng Zhong is entered main drilling pipe by slurry outlet and is discharged, so that soil and core are deposited in drill bit, and is constantly subjected to the pressure of underground
Power, so that core is whole more and more harder, so that staff is inserted into out using stock when core to be taken out to detection from drill bit
Core is released in slurry hole, and the core released from drill bit is integrally cylindrical, and hardness is larger, the work detected convenient for testing staff
Make.
The utility model is further arranged to: interconnecting piece is inserted into main drilling pipe, and is threadedly coupled with main drilling pipe, drill bit it is straight
Diameter is identical as the diameter of main drilling pipe.
By using above-mentioned technical proposal, so that drill bit and the junction of main drilling pipe are more concordant, therefore drilling
When work, the hole drilled out not will receive the clamping of drill bit Yu main drilling pipe junction, and main drilling pipe is allowed to be convenient for when carrying out boring work
Drill bit is followed to decline.And be together by a threaded connection between main drilling pipe and drill bit, so that staff is in actual application
In convenient for being replaced to drill bit.
The utility model is further arranged to: drill bit is provided with multiple circumferential etc. along drill bit outer wall far from the side of interconnecting piece
The brill tooth of spacing arrangement.
By using above-mentioned technical proposal, so that being more convenient to bury when carrying out boring work in drill bit.
The utility model is further arranged to: being additionally provided on interconnecting piece and is connected firmly for increasing main drilling pipe and drill bit
Property reinforced pipe, the maximum gauge of reinforced pipe be set as and the internal diameter of main drilling pipe cooperate.
By using above-mentioned technical proposal, since in prolonged boring work, drill bit is easy to encounter the stone of underground
Head, a vibration can be generated when drill bit and stone are touched, and vibration is transferred to the junction of drill bit Yu main drilling pipe, may be such that
It bends between drill bit and main drilling pipe, therefore in order to enable the connection between drill bit and main drilling rod is more secured, is less prone to
The case where bending, reinforced pipe is provided on interconnecting piece, the maximum gauge of reinforced pipe is set as cooperating with the internal diameter of main drilling pipe, make
Can effectively main drilling pipe be supported by obtaining reinforced pipe.
The utility model is further arranged to: the Drainage Division that diameter is less than reinforced pipe is provided on reinforced pipe, on Drainage Division
It is provided with multiple through the apopore for reinforcing tube wall.
By using above-mentioned technical proposal, so that the water of slurry outlet discharge enters inside reinforced pipe via apopore, finally
It is discharged entering in main drilling pipe via reinforced pipe.
The utility model is further arranged to: being set as being detachably connected between reinforced pipe and interconnecting piece.
By using above-mentioned technical proposal, so that the drill bit for being equipped with reinforced pipe is suitable for different types of main drilling pipe.
The utility model is further arranged to: being offered jack on interconnecting piece, is provided on reinforced pipe and cooperates with jack
Inserted link, and the connection between jack and inserted link be threadedly coupled.
By using above-mentioned technical proposal, so that staff separates by reinforced pipe and interconnecting piece.And in order to
Reinforced pipe is turned convenient for staff reinforced pipe is mounted on drill bit, turn identical with nut shape is provided on inserted link
Portion allows the installation of staff convenient for the clamping part of staff's fixed drill bit when installing reinforced pipe being provided on drill bit
It works more convenient.
The utility model is further arranged to: the drainage hole for offering and being connected to drill bit internal is also extended through in reinforced pipe,
And jack is connected to drill bit internal.
It, can also be from so that the water in drill bit in mud can not only be discharged from slurry outlet by using above-mentioned technical proposal
Drainage hole discharge on reinforced pipe, so that the more convenient discharge of water in mud, so that the water in mud separates more with core
Thoroughly.
The utility model is further arranged to: being connected in drill bit far from the threaded one end of reinforced pipe and is bored tooth casing, bores tooth
Setting is on boring tooth casing.
By using above-mentioned technical proposal, constantly contacted with the stone of underground due in actual boring work, boring tooth
And generate collide with, may result in bore tooth deform, finally influence boring work so that staff also need replacing it is new
Drill bit.It for save the cost, is connected in drill bit far from the threaded one end of reinforced pipe and bores tooth casing, bored tooth setting and boring tooth casing
On.Therefore when in use, deformed once boring tooth, staff can bore tooth casing by replacement to replace brill tooth, be not required to
Will more bit change, greatly saved cost.
The utility model is further arranged to: in drill bit and bore connecting tube be installed between tooth casing, connecting tube respectively with
Drill bit and brill tooth casing are to be threadedly coupled；Bore tooth casing diameter be set as identical as drill bit, connecting tube respectively with drill bit and brill
The inner wall of tooth casing connects.
By using above-mentioned technical proposal, so that drill bit and the junction for boring tooth casing are more concordant, therefore bored
When hole works, the hole drilled out not will receive drill bit and bore the clamping of tooth cannula connection.
In conclusion the utility model has the following beneficial effects:
1, by setting mud and core separator, so that the core taken out when drilling is more convenient testing staff and carries out
Detection；
2, by setting reinforced pipe, keep the connection between winner's drilling pipe and drill bit more secured, there is better bending resistance effect；
3, by that will bore tooth and drill bit is set as being detachably connected, so that boring tooth more convenient replacement in damage, and pole
Big has saved cost.
Detailed description of the invention
Fig. 1 is the schematic diagram of separator in embodiment 1；
Fig. 2 is the schematic diagram of reinforced pipe in embodiment 1；
Fig. 3 is the explosive view of reinforced pipe and interconnecting piece in embodiment 1；
Fig. 4 is that the schematic diagram of tooth is bored in setting on drill bit in embodiment 1；
Fig. 5 is the cross-sectional view of reinforced pipe in embodiment 1；
Fig. 6 is the schematic diagram of separator in embodiment 2；
Fig. 7 is that the cross-sectional view of tooth sleeve is bored in setting on drill bit in embodiment 2；
Fig. 8 is that the cross-sectional view of tooth sleeve is bored in setting on drill bit in embodiment 3.
In figure, 1, main drilling pipe；2, drill bit；3, interconnecting piece；4, tooth is bored；5, slurry outlet；6, reinforced pipe；7, Drainage Division；8, go out
Water hole；9, jack；10, inserted link；11, portion is turned；12, clamping part；13, drainage hole；14, tooth casing is bored；15, connecting tube.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment 1: a kind of mud and core separator are equipped on main drilling pipe 1 as shown in Figure 1, including main drilling pipe 1
Drill bit 2 is together by a threaded connection between main drilling pipe 1 and drill bit 2, so that staff is in actual application convenient for brill
First 2 are replaced.
Specifically, as shown in Fig. 2, main drilling pipe 1 is whole in long tube type, whole drill bit 2 is also in long tube type, drill bit 2
Diameter is identical as the diameter of main drilling pipe 1, and is provided on drill bit 2 and to realize in the main drilling pipe 1 of insertion and be threadedly coupled with main drilling pipe 1
Interconnecting piece 3 so that drill bit 2 and the junction of main drilling pipe 1 are more concordant, therefore when carrying out boring work, the hole drilled out is not
The clamping that will receive drill bit 2 Yu main 1 junction of drilling pipe allows main drilling pipe 1 to be convenient for that drill bit 2 is followed to decline when carrying out boring work.
In conjunction with Fig. 4, in order to enable being more convenient to bury when carrying out boring work in drill bit 2, in drill bit 2 far from interconnecting piece 3
Side be provided with multiple brill teeth 4 being circumferentially equally spaced along 2 outer wall of drill bit, here provided with four brill teeth 4, allow drillman
It is more easy when burying to make.
When in use, first drill bit 2 and main drilling pipe 1 are installed together, then pacify main drilling pipe 1 far from one end of drill bit 2
On drilling machine, and drill bit 2 is being arranged vertically with the position to drill is needed after the installation is completed, to complete the work of equipment preparation
Make.Following staff starts drilling machine, and ground is bored and opened by the brill tooth 4 and ground face contact, brill tooth 4 on drill bit 2, and in drilling machine band
Main drilling pipe 1 is moved to rotate on one side and push main drilling pipe 1, so that drill bit 2 and main drilling pipe 1 constantly decline and are inserted into ground,
And opened in insertion for the ease of boring ground, the water for increasing soil wettability is generally sprayed at the position of drilling, so that
Drill bit 2 is more convenient to bury.Wherein, during drill bit 2 constantly declines, the soil or sandstone drilled out enters in drill bit 2, shape
At core, at the end of boring work, staff, which can take off drill bit 2, detects the core taking-up in drill bit 2,
To understand the actual conditions of underground.
But in actual boring work, the core in drill bit 2 is contacted with mud always, so that core is immersed in
In mud, and core may be discharged from main drilling pipe 1 together with mud, allow testing staff take out core can not shape
At the cylinder for detection, so that the detection work of testing staff is not easy to carry out.
As shown in Figure 2 and Figure 3, it in order to enable the core generated in drill bit 2 is easier that testing staff is convenient for use, will connect
Portion 3 is set as solid cylindricality, and multiple slurry outlets 5 being circumferentially equally spaced along interconnecting piece 3 are offered on interconnecting piece 3,
When installing drill bit 2 on main drilling pipe 1, main drilling pipe 1 is connected to by slurry outlet 5 with drill bit 2, so that in drilling in drill bit 2
Core cannot be entered in main drilling pipe 1 by interconnecting piece 3, and the mistake that the water mixed in core and mud constantly declines in drill bit 2
Cheng Zhong is entered main drilling pipe 1 by slurry outlet 5 and is discharged, so that soil and core are deposited in drill bit 2, and is constantly subjected to underground
Pressure so that core is whole more and more harder, so that staff uses stock when core to be taken out to detection from drill bit 2
Insertion slurry outlet 5 releases core, and the core released from drill bit 2 is integrally cylindrical, and hardness is larger, carries out convenient for testing staff
The work of detection.
As shown in Figure 2 and Figure 3, it is additionally provided on interconnecting piece 3 for increasing adding for 2 connectivity robustness of main drilling pipe 1 and drill bit
Strong pipe 6, since in prolonged boring work, drill bit 2 is easy to encounter the stone of underground, when drill bit 2 and stone are touched
A vibration can be generated, vibration is transferred to the junction of drill bit 2 Yu main drilling pipe 1, may be such that between drill bit 2 and main drilling pipe 1
The case where bending, therefore in order to enable the connection between drill bit 2 and main drilling rod is more secured, being less prone to bending, even
It is provided with reinforced pipe 6 in socket part 3, the maximum gauge of reinforced pipe 6 is set as cooperating with the internal diameter of main drilling pipe 1, enables reinforced pipe 6
It is enough that effectively main drilling pipe 1 is supported.
As shown in Figure 2 and Figure 3, the water that slurry outlet 5 is discharged in reinforced pipe 6 in order to prevent causes to stop, and sets on reinforced pipe 6
It is equipped with the Drainage Division 7 that diameter is less than reinforced pipe 6, is provided with multiple apopores 8 through 6 tube wall of reinforced pipe on Drainage Division 7, so that
The water that slurry outlet 5 is discharged enters inside reinforced pipe 6 via apopore 8, is finally discharged in via the main drilling pipe 1 of the entrance of reinforced pipe 6.
It as shown in Figure 2 and Figure 3, will in order to enable the drill bit 2 for being equipped with reinforced pipe 6 is suitable for different types of main drilling pipe 1
It is set as being detachably connected between reinforced pipe 6 and interconnecting piece 3.
Specifically, as shown in Figure 2 and Figure 3, jack 9 is offered on interconnecting piece 3, is provided on reinforced pipe 6 and jack
The inserted links 10 of 9 cooperations, and the connection between jack 9 and inserted link 10 is to be threadedly coupled, so that staff is by 6 He of reinforced pipe
Interconnecting piece 3 is separated.And turn reinforced pipe 6 for the ease of staff and reinforced pipe 6 is mounted on drill bit 2, in inserted link
Be provided on 10 it is identical with nut shape turn portion 11, be provided on drill bit 2 convenient for staff when installing reinforced pipe 6
The clamping part 12 of fixed drill bit 2.
In addition, also extending through the drainage hole 13 for offering and being connected to inside drill bit 2, and jack 9 in reinforced pipe 6 in conjunction with Fig. 5
It is connected to inside drill bit 2, so that the water in drill bit 2 in mud can not only be discharged from slurry outlet 5, it can also be from reinforced pipe 6
Drainage hole 13 is discharged so that the more convenient discharge of water in mud, thus the water in mud separated with core it is more thorough.
The specifically used method of the present embodiment is when in use, first to install drill bit 2 and reinforced pipe 6, then will installation
There is the drill bit 2 of reinforced pipe 6 to be installed together with main drilling pipe 1, then main drilling pipe 1 is installed together with drilling machine, and is installing
Drill bit 2 is arranged vertically with the position to drill is needed afterwards, to complete the work of equipment preparation.Following staff, which starts, to bore
Machine, brill tooth 4 and ground face contact on drill bit 2 bore tooth 4 and bore ground and open, and drive main drilling pipe 1 to rotate on one side and to master in drilling machine
Drilling pipe 1 is pushed, so that drill bit 2 and main drilling pipe 1 constantly decline and are inserted into ground, and in insertion for the ease of by ground
Face is bored and is opened, and the water for increasing soil wettability is generally sprayed at the position of drilling, buries so that drill bit 2 is more convenient.Drill bit 2 not
During disconnected decline, the soil or sandstone drilled out enters in drill bit 2, forms core, and mud and core enter together
In drill bit 2.Wherein, the moisture in drill bit 2 in mud is discharged to main drilling pipe from slurry outlet 5 during drill bit 2 constantly declines
1, the core in drill bit 2 is constantly subjected to resistance when drilling, constantly mixes with the mud of moisture removal is removed, so that core is got over
Come it is harder, convenient for testing staff take out detection.At the end of boring work, staff can be taken off drill bit 2 drill bit 2
In core taking-up detected, to understand the actual conditions of underground.
Embodiment 2: mud and core separator always, the present embodiment the difference from embodiment 1 is that, such as Fig. 6, Fig. 7
It is shown, it in actual boring work, bores tooth 4 and is constantly contacted with the stone of underground and generate and collide with, may result in brill tooth 4 and go out
It now deforms, finally influences boring work, so that staff also needs replacing new drill bit 2.For save the cost, in drill bit 2
Threaded one end far from reinforced pipe 6, which is connected with, bores tooth casing 14, bores the setting of tooth 4 on boring tooth casing 14.Therefore when in use, one
Denier is bored tooth 4 and is deformed, and staff can bore tooth casing 14 by replacement and bore tooth 4 to replace, and does not need more bit change 2, pole
Big has saved cost.
Embodiment 3: a kind of mud and core separator, the present embodiment the difference from example 2 is that, referring to Fig. 8,
Connecting tube 15 is installed, connecting tube 15 is respectively screw thread company with drill bit 2 and brill tooth casing 14 between drill bit 2 and brill tooth casing 14
It connects, staff can be mounted on connection by the way that first connecting tube 15 is mounted on drill bit 2, then by tooth casing 14 is bored during installation
Drill bit 2 is completed on pipe 15 and bores the installation of tooth casing 14.In addition, staff will bore tooth set after installing connecting tube 15
The diameter of pipe 14 is set as identical as drill bit 2, and connecting tube 15 is connect with the inner wall of drill bit 2 and brill tooth casing 14 respectively, so that boring
First 2 is more concordant with the junction for boring tooth casing 14, therefore when carrying out boring work, the hole drilled out not will receive drill bit 2 and
Bore the clamping of 14 junction of tooth casing.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (10)
1. a kind of mud and core separator, it is characterised in that: including main drilling pipe (1), be equipped with drill bit on main drilling pipe (1)
(2), main drilling pipe (1) is integrally in long tube type, and whole drill bit (2) is also in long tube type, is provided on drill bit (2) with main drilling pipe (1) even
The interconnecting piece (3) connect, interconnecting piece (3) are set as solid cylindricality, and offer on interconnecting piece (3) multiple along interconnecting piece (3)
The slurry outlet (5) for being circumferentially equally spaced and being used to for moisture in mud being discharged.
2. mud according to claim 1 and core separator, it is characterised in that: interconnecting piece (3) is inserted into main drilling pipe (1)
In, and be threadedly coupled with main drilling pipe (1), the diameter of drill bit (2) is identical as the diameter of main drilling pipe (1).
3. mud according to claim 1 and core separator, it is characterised in that: drill bit (2) is far from interconnecting piece (3)
Side is provided with multiple brill teeth (4) being circumferentially equally spaced along drill bit (2) outer wall.
4. mud according to claim 1 and core separator, it is characterised in that: be additionally provided on interconnecting piece (3)
For increasing the reinforced pipe (6) of main drilling pipe (1) and drill bit (2) connectivity robustness, the maximum gauge of reinforced pipe (6) is set as and master
The internal diameter of drilling pipe (1) cooperates.
5. mud according to claim 4 and core separator, it is characterised in that: reinforced pipe is provided with diameter on (6)
Less than the Drainage Division (7) of reinforced pipe (6), multiple apopores (8) through reinforced pipe (6) tube wall are provided on Drainage Division (7).
6. mud according to claim 5 and core separator, it is characterised in that: reinforced pipe (6) and interconnecting piece (3) it
Between be set as being detachably connected.
7. mud according to claim 5 and core separator, it is characterised in that: offered on interconnecting piece (3) slotting
Hole (9) is provided with the inserted link (10) with jack (9) cooperation, and the company between jack (9) and inserted link (10) on reinforced pipe (6)
It is connected in threaded connection.
8. mud according to claim 6 and core separator, it is characterised in that: also extended through out in reinforced pipe (6)
It is connected to equipped with the drainage hole (13) being connected to drill bit (2) inside, and inside jack (9) and drill bit (2).
9. mud according to claim 1 and core separator, it is characterised in that: in drill bit (2) far from reinforced pipe (6)
Threaded one end be connected with bore tooth casing (14), bore tooth (4) setting bore tooth casing (14) on.
10. mud according to claim 9 and core separator, it is characterised in that: in drill bit (2) and bore tooth casing
(14) it is equipped between connecting tube (15), connecting tube (15) is respectively to be threadedly coupled with drill bit (2) and brill tooth casing (14)；Bore tooth
The diameter of casing (14) is set as identical as drill bit (2), connecting tube (15) respectively with drill bit (2) and bore tooth casing (14) inner wall
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821040032.4U CN208502668U (en) | 2018-06-29 | 2018-06-29 | Mud and core separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821040032.4U CN208502668U (en) | 2018-06-29 | 2018-06-29 | Mud and core separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208502668U true CN208502668U (en) | 2019-02-15 |
Family
ID=65282281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821040032.4U Expired - Fee Related CN208502668U (en) | 2018-06-29 | 2018-06-29 | Mud and core separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208502668U (en) |
-
2018
- 2018-06-29 CN CN201821040032.4U patent/CN208502668U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190215 Termination date: 20210629 |
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| CF01 | Termination of patent right due to non-payment of annual fee |