CN212317097U - Town road shunting drainage pipe - Google Patents
Town road shunting drainage pipe Download PDFInfo
- Publication number
- CN212317097U CN212317097U CN202020589619.1U CN202020589619U CN212317097U CN 212317097 U CN212317097 U CN 212317097U CN 202020589619 U CN202020589619 U CN 202020589619U CN 212317097 U CN212317097 U CN 212317097U
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- drainage pipeline
- pipeline
- filter screen
- sewer
- rainwater
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Abstract
The utility model provides a municipal road shunting type drainage pipeline, which is characterized by comprising a sewer pipeline, the upper end of the sewer pipeline is provided with a first filter screen, the lower end of the first filter screen is provided with a suspension frame, the active carbon blocks are arranged inside the suspension frame, the suspension frame which is provided with the active carbon blocks inside and is of a net structure is suspended at the bottom of the first filter screen by the hook A, so that the water source mixed by rainwater entering from the water inlet of the sewer pipe and industrial wastewater can fully contact with the activated carbon blocks in the suspension frame, the activated carbon blocks can effectively adsorb impurities and pollutants in the water source, the water source is effectively purified, the concentration of the industrial wastewater in the water source is reduced, thereby greatly reducing the concentration of the industrial wastewater in the water source discharged by the rainwater drainage pipeline, thereby greatly reducing the influence of the water source discharged from the rainwater drainage pipeline on the external environment.
Description
Technical Field
The utility model relates to a municipal facilities technical field especially relates to town road shunting drainage pipe.
Background
The split-flow drainage pipeline refers to a mode that two or more channel systems are adopted in an urban industrial area or a residential area to collect, convey and treat sewage with different properties respectively. Usually, two sets of pipeline systems are arranged to respectively discharge and dispose rainwater and sewage: the collected sewage is conveyed to a sewage treatment plant by a pipeline for centralized treatment, and the rainwater is directly or simply treated and discharged into natural water through a ditch or a pipeline in a centralized way; the existing municipal drainage pipeline is only provided with one drainage pipeline, so that the harmful sewage generated in the production of enterprises is directly discharged into the external water body and cannot be effectively treated, and the pollution to the environment is increasingly serious; although sewage pipelines of some factories are directly introduced into sewage treatment plants, the amount of sewage is increased due to the connection of a rainwater collecting pipeline, the treatment cost of sewage is directly influenced, and the development of enterprises is not facilitated;
according to a town road shunting drainage pipe that publication number is CN208733769U proposed, though this patent can effectually avoid the mixture of rainwater and industrial waste water through dividing into rainwater drainage pipe and industrial waste water drainage pipe with main drainage pipe to effectively avoid the indiscriminate row of sewage to put, and avoid rainwater and industrial waste water to mix, and the problem that the sewage treatment cost of enterprise that leads to improves does benefit to the use, nevertheless this patent still has following defect in concrete use:
1. the patent finds that industrial wastewater and rainwater are simultaneously discharged into a sewer pipeline, so that the rainwater and the industrial wastewater are easily mixed, but the industrial wastewater obtains a certain purification effect while being mixed, the first filter screen and the second filter screen arranged in the sewer pipeline in the patent can filter the rainwater and large waste residues in the industrial wastewater, but only filter the large waste residues in the rainwater and the industrial wastewater, and do not purify the mixed water of the rainwater and the industrial wastewater, so that the industrial wastewater can be existed in the water discharged from a rainwater drainage pipeline after the mixed water respectively enters the rainwater and the industrial wastewater drainage pipeline through bent pipes at two ends of a drainage pipeline at the bottom of the sewer pipeline, and a certain influence can be caused on the external environment;
2. above-mentioned patent discovers in specific use, it sets up the slope of second filter screen in sewer pipe, this though can make the rainwater that gets into by sewer pipe and the waste residue collection box of waste water discharge into sewer pipe rear side, but when its long-term back of using, the mesh of second filter screen can be difficult to avoid blockking up by the waste residue, if do not carry out timely effectual clearance, will influence sewer pipe's drainage effect, make the water among the sewer pipe can't obtain normal circulation, thereby the normal use of sewer pipe has been influenced.
Disclosure of Invention
According to the technical problem, the utility model provides a town road shunting type drainage pipeline, which is characterized by comprising a drainage pipeline body, a main drainage pipeline, a sewer pipeline, a rainwater drainage pipeline, an industrial wastewater drainage pipeline and a waste residue box, wherein the main drainage pipeline and the sewer pipeline are respectively arranged inside the drainage pipeline body, and the sewer pipeline is arranged at the upper side of the main drainage pipeline; a rainwater drainage pipeline and an industrial wastewater drainage pipeline are respectively arranged in the main drainage pipeline, and the industrial wastewater drainage pipeline is arranged on the right side of the rainwater drainage pipeline; a waste residue box is arranged at the rear side of the sewer pipeline and is arranged at the upper side of the main drainage pipeline by bolts;
the upper end of the main drainage pipeline is provided with two through holes; the upper ends of the rainwater drainage pipeline and the industrial wastewater drainage pipeline are respectively provided with a water inlet;
the upper end of the sewer pipeline is provided with a water inlet, and the water inlet is provided with a well cover; the bottom of the sewer pipeline is provided with two water outlets, one of the water outlets is connected with one end of a flow guide pipe, and the other end of the flow guide pipe penetrates through one of the through holes formed in the upper end of the main drainage pipeline and is connected with a water inlet formed in the upper end of the rainwater drainage pipeline; the other water outlet is connected with one end of a flow guide pipe, and the other end of the flow guide pipe penetrates through the other through hole formed in the upper end of the main drainage pipeline and is connected with a water inlet formed in the upper end of the industrial wastewater drainage pipeline;
the flow guide pipe is formed by connecting and combining the head and the tail of threaded pipes in a threaded manner, the number of the threaded pipes is N, and N is more than or equal to 2;
a slide way A is arranged on the inner side wall of the upper end of the sewer pipeline; the slideway A is of an annular structure; the upper end of the sewer pipeline is provided with a first filter screen which is connected with the inner side wall of the sewer pipeline in a sliding way through a slide way A, and the first filter screen is made of metal; a handle is arranged on the upper side of the first filter screen;
the lower end of the first filter screen is provided with a suspension frame, the number of the suspension frames is M, and M is more than or equal to 2; the frame body of the hanging frame is of a net structure; an active carbon block is arranged in the suspension frame; the net holes on the left side and the right side of the hanging frame are respectively connected with one end of a hook B, the other ends of the two hooks B are respectively welded with the bottom ends of the connecting rods, the top ends of the two connecting rods are respectively welded with the bottom end of the hanging rod, a hook A is welded at the top end of the hanging rod, and the hook A penetrates through the net holes of the first filter screen and is hung on the net holes of the first filter screen;
the left inner side wall and the right inner side wall of the sewer pipeline are respectively provided with a slideway B, and the slideways B are positioned at the lower sides of the slideways A; the slideway B is arranged on the left inner side wall of the sewer pipeline and is higher than the slideway B arranged on the right inner side wall of the sewer pipeline;
a second filter screen is arranged at the bottom of the hanging frame; the second filter screen is made of metal; the left end and the right end of the second filter screen are respectively welded with a sliding block, and the section of each sliding block is of a T-shaped structure; the second filter screen is respectively connected with the inner side wall of the sewer pipeline in a sliding way through a sliding block and a slide way B; the second filter screen is obliquely arranged inside the sewer pipeline; one end of a spring is welded at the bottom of the sliding block, and the other end of the spring is welded with the bottom of the slideway B;
a discharge port is formed in the rear side wall of the sewer pipeline, and the discharge port and a second filter screen in the sewer pipeline are positioned on the same horizontal plane; the welding of discharge gate department has the one end of guide board, the other end of guide board extends to the inside of waste residue case.
The utility model has the advantages that:
the utility model discloses a with the inside placing active carbon block be network structure hang the frame by couple A in the bottom of first filter screen, make the water source that rainwater that gets into by sewer pipe water inlet and industrial waste water mix can fully contact the active carbon block inside hanging the frame, the active carbon block can adsorb impurity and pollutant that exist in this water source effectively, make this water source effectively purified, the concentration of industrial waste water in this water source has been reduced, thereby the concentration of industrial waste water in the water source that has discharged by rainwater drainage pipe has been reduced to a great extent, and then the influence that the water source that has discharged by rainwater drainage pipe caused external environment has been reduced to a great extent;
the utility model discloses a to weld the slider respectively at the both ends of second filter screen, and utilize this slider with second filter screen sliding connection on the slide B of sewer pipe inside wall, and weld the spring in the bottom of this slider, make the second filter screen can be under the impact of the mixed water of rainwater and industrial waste water, produce vibrations by the spring, make the waste residue on the second filter screen mesh can pop out this mesh under the effort that the spring resumes elastic deformation, and roll to the left side of second filter screen gradually by the right side of this second filter screen, and under the further effort of spring, by the discharge gate roll-off of sewer pipe, and fall into the waste residue case that sets up in sewer pipe rear side;
the utility model has the advantages that one end of the guide plate is welded at the discharge port of the sewer pipeline, and the other end of the guide plate extends to the inside of the waste residue box, so that waste residue discharged from the discharge port can be better discharged into the waste residue box under the action of the guide plate;
the utility model discloses an utilize slide A to connect first filter screen and sewer pipe's inside wall sliding, make the large-scale waste residue on the first filter screen need only lift the well lid on the sewer pipe when needing the manual work to clear up each time, then hold the handle on the first filter screen and can take out this first filter screen and clear up, make this first filter screen can reach the effect convenient to clear up; meanwhile, the activated carbon blocks suspended in the suspension frame at the bottom of the first filter screen can be quickly replaced while the first filter screen is manually cleaned, so that the effects of quickly cleaning the first filter screen and replacing the activated carbon are achieved;
the utility model discloses a form the honeycomb duct by threaded connection combination between a plurality of screwed pipe head and the tail for this honeycomb duct can reach convenient to detach's effect, thereby make its inside artifical every period of being convenient for carry out thorough effectual clearance, and then effectively ensured that this honeycomb duct is inside can not appear because of the phenomenon that the filter residue blockked up, thereby guaranteed the circulation of this honeycomb duct, and availability factor.
Drawings
FIG. 1 is a front view of the overall structure of the present invention;
FIG. 2 is a side view of the overall structure of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 1;
FIG. 4 is an enlarged view of a detailed structure of a portion B in FIG. 2 according to the present invention;
FIG. 5 is a sectional view of the structure of the hanging frame with the activated carbon blocks inside;
FIG. 6 is a schematic view of the structure of the hanging frame with the activated carbon blocks inside;
FIG. 7 is a schematic view of the structure of the threaded pipe of the present invention;
FIG. 8 is a sectional view of the concrete structure of the flow guide pipe formed by splicing a plurality of threaded pipes according to the present invention;
fig. 9 is a sectional view of the concrete structure of the sliding block of the present invention.
As shown in the figure: 1-drainage pipeline body, 2-main drainage pipeline, 3-sewer pipeline, 4-flow guide pipe, 5-waste residue box, 6-guide plate, 21-rainwater drainage pipeline, 22-industrial wastewater drainage pipeline, 31-slide A, 32-first filter screen, 33-suspension frame, 34-second filter screen, 35-slide block, 36-slide B, 37-spring, 38-discharge port, 39-well cover, 43-screwed pipe, 321-handle, 331-active carbon block, 332-hook A, 333-connecting rod, 334-hook B and 335-suspension rod.
Detailed Description
Example 1
The utility model provides a municipal road shunting type drainage pipeline, which is characterized by comprising a drainage pipeline body 1, a main drainage pipeline 2, a sewer pipeline 3, a rainwater drainage pipeline 21, an industrial wastewater drainage pipeline 22 and a waste residue box 5, wherein the main drainage pipeline 2 and the sewer pipeline 3 are respectively arranged inside the drainage pipeline body 1, and the sewer pipeline 3 is arranged at the upper side of the main drainage pipeline 2; a rainwater drainage pipeline 21 and an industrial wastewater drainage pipeline 22 are respectively arranged in the main drainage pipeline 2, and the industrial wastewater drainage pipeline 22 is arranged on the right side of the rainwater drainage pipeline 21; a waste residue box 5 is arranged at the rear side of the sewer pipeline 3, and the waste residue box 5 is arranged at the upper side of the main sewer pipeline 2 by bolts;
the upper end of the main drainage pipeline 2 is provided with two through holes; the upper ends of the rainwater drainage pipeline 21 and the industrial wastewater drainage pipeline 22 are respectively provided with a water inlet;
the upper end of the sewer pipeline 3 is provided with a water inlet, and the water inlet is provided with a well cover 39; the bottom of the sewer pipeline 3 is provided with two water outlets, one of the water outlets is connected with one end of a flow guide pipe 4, and the other end of the flow guide pipe 4 passes through one of the through holes arranged at the upper end of the main drainage pipeline 2 and is connected with a water inlet arranged at the upper end of the rainwater drainage pipeline 21; the other water outlet is connected with one end of a flow guide pipe 4, and the other end of the flow guide pipe 4 passes through the other through hole formed in the upper end of the main drainage pipeline 2 and is connected with a water inlet formed in the upper end of an industrial wastewater drainage pipeline 22;
the flow guide pipe 4 is formed by connecting and combining the head and the tail of the threaded pipes 43 in a threaded manner, the number of the threaded pipes 43 is N, and N is more than or equal to 2;
a slide way A31 is arranged on the inner side wall at the upper end of the sewer pipeline 3; the slideway A31 is of a ring structure; the upper end of the sewer pipeline 3 is provided with a first filter screen 32, the first filter screen 32 is connected with the inner side wall of the sewer pipeline 3 in a sliding way through a slide way A31, and the first filter screen 32 is made of metal; a handle 321 is arranged on the upper side of the first filter screen 32;
the lower end of the first filter screen 32 is provided with a hanging frame 33, the number of the hanging frames 33 is M, and M is more than or equal to 2; the frame body of the hanging frame 33 is of a net structure; an activated carbon block 331 is arranged inside the hanging frame 33; one end of a hook B334 is connected to the meshes on the left side and the right side of the hanging frame 33 respectively, the other ends of the two hooks B334 are welded to the bottom ends of the connecting rods 333 respectively, the top ends of the two connecting rods 333 are welded to the bottom end of the hanging rod 335 respectively, a hook A332 is welded to the top end of the hanging rod 335, and the hook A332 penetrates through the meshes of the first filter screen 32 and is hung on the meshes of the first filter screen 32;
the left inner side wall and the right inner side wall of the sewer pipeline 3 are respectively provided with a slide way B36, and a slide way B36 is positioned at the lower side of the slide way A31; the left inner side wall of the sewer pipeline is provided with a slideway B36 which is higher than the slideway B36 arranged on the right inner side wall of the sewer pipeline;
the bottom of the hanging frame 33 is provided with a second filter screen 34; the second filter screen 34 is made of metal; the left end and the right end of the second filter screen 34 are respectively welded with a slide block 35, and the section of the slide block 35 is of a T-shaped structure; the second filter screen 34 is respectively connected with the inner side wall of the sewer pipeline in a sliding way through a slide block 35 and a slide way B36; the second filter screen 34 is obliquely arranged inside the sewer pipeline; one end of a spring 37 is welded at the bottom of the sliding block 35, and the other end of the spring 37 is welded with the bottom of the slide way B36;
a discharge hole 38 is formed in the rear side wall of the sewer pipeline, and the discharge hole 38 and the second filter screen 34 in the sewer pipeline are positioned on the same horizontal plane; the discharge port 38 is welded with one end of the guide plate 6, and the other end of the guide plate 6 extends to the inside of the waste residue box 5.
Example 2
When the utility model is used, firstly rainwater and industrial waste water can pass through the well cover 39 at the water inlet at the top of the sewer pipeline 3, and the rainwater and large waste residues in the industrial waste water are intercepted by the first filter screen 32, then impurities and pollutants in the rainwater and the industrial waste water are adsorbed by the active carbon in the hanging frame 33 hung at the bottom of the first filter screen 32, because the hanging frame 33 is of a net structure, the circulation of the rainwater and the industrial waste water is not affected, then the rainwater and the waste residues still existing in the industrial waste water can be intercepted by the second filter screen 34 obliquely arranged in the sewer pipeline 3, at the moment, the rainwater and the industrial waste water continuously impact the second filter screen 34, thereby causing the vibration of the spring 37 welded at the bottom of the sliding block 35 at the two ends of the second filter screen 34, so that the waste residue on the mesh of the second filter screen 34 can be popped out under the action of the spring 37 recovering the elastic deformation, and gradually roll from the right side of the second filter screen 34 to the left side of the second filter screen 34, and slide out from the discharge port 38 of the sewer pipeline 3 under the further action of the spring 37, and fall into the waste residue box 5 arranged at the rear side of the sewer pipeline 3 under the guide of the guide plate 6 welded at the discharge port 38 of the sewer pipeline 3, and then the rainwater and the industrial wastewater can be discharged along the two water outlets at the bottom of the sewer pipeline 3 and respectively injected into the rainwater drainage pipeline 21 and the industrial wastewater drainage pipeline 22 along the guide pipe 4 formed by the threaded connection and combination of the head and the tail of the plurality of threaded pipes 43, and the rainwater and the industrial wastewater are effectively purified after being adsorbed by the activated carbon, the concentration of industrial wastewater in the water source is reduced, so that the concentration of industrial wastewater in the water source discharged by the rainwater drainage pipeline 21 is reduced to a great extent, the influence of the water source discharged by the rainwater drainage pipeline 21 on the external environment is reduced to a great extent, moreover, the water source discharged by the industrial wastewater drainage pipeline 22 is adsorbed by activated carbon and purified, and the cost of sewage treatment in a sewage treatment plant is reduced.
Example 3
When the utility model is not used, namely when no rainwater and no industrial wastewater exist, firstly, the well cover 39 on the sewer pipeline 3 is opened, then the handle 321 on the first filter screen 32 is held to take out and clean the first filter screen 32, so that the first filter screen 32 can achieve the effect of convenient cleaning, meanwhile, the active carbon block 331 hung inside the hanging frame 33 at the bottom of the first filter screen 32 can be quickly replaced when the first filter screen 32 is manually cleaned, thereby achieving the effects of quickly cleaning the first filter screen 32 and replacing the active carbon, then the honeycomb duct 4 is manually disassembled into a plurality of threaded pipes 43 in a reverse screwing thread mode, and the waste residue in the threaded pipes 43 can be thoroughly cleaned, the honeycomb duct 4 in the application is formed by combining the threaded connection between the head and the tail of the plurality of threaded pipes 43, so that the honeycomb duct 4 can achieve the effect of convenient disassembly, thereby make its inside can be convenient for the manual work carry out thorough effectual clearance at a period, and then effectively ensured that this honeycomb duct 4 is inside can not appear because of the phenomenon of filter residue jam to guaranteed this honeycomb duct 4's circulation, and availability factor, operated the back more than the step, assemble the part under will dismantling with above step again, can continue to put into use, it needs to be noted that, the active carbon piece 331 in this application needs the manual work to carry out periodic replacement.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The municipal road shunting type drainage pipeline is characterized by comprising a drainage pipeline body, a main drainage pipeline, a sewer pipeline, a rainwater drainage pipeline, an industrial wastewater drainage pipeline and a waste residue box, wherein the main drainage pipeline and the sewer pipeline are respectively arranged inside the drainage pipeline body, and the sewer pipeline is arranged on the upper side of the main drainage pipeline; a rainwater drainage pipeline and an industrial wastewater drainage pipeline are respectively arranged in the main drainage pipeline, and the industrial wastewater drainage pipeline is arranged on the right side of the rainwater drainage pipeline; a waste residue box is arranged at the rear side of the sewer pipeline and is arranged at the upper side of the main drainage pipeline by bolts;
the upper end of the main drainage pipeline is provided with two through holes; the upper ends of the rainwater drainage pipeline and the industrial wastewater drainage pipeline are respectively provided with a water inlet;
the upper end of the sewer pipeline is provided with a water inlet, and the water inlet is provided with a well cover; the bottom of the sewer pipeline is provided with two water outlets, one of the water outlets is connected with one end of a flow guide pipe, and the other end of the flow guide pipe penetrates through one of the through holes formed in the upper end of the main drainage pipeline and is connected with a water inlet formed in the upper end of the rainwater drainage pipeline; the other water outlet is connected with one end of a flow guide pipe, and the other end of the flow guide pipe penetrates through the other through hole formed in the upper end of the main drainage pipeline and is connected with a water inlet formed in the upper end of the industrial wastewater drainage pipeline;
the flow guide pipe is formed by connecting and combining the head and the tail of a threaded pipe in a threaded manner;
a slide way A is arranged on the inner side wall of the upper end of the sewer pipeline; the upper end of the sewer pipeline is provided with a first filter screen which is connected with the inner side wall of the sewer pipeline in a sliding way through a slide way A; a handle is arranged on the upper side of the first filter screen;
the lower end of the first filter screen is provided with a suspension frame; an active carbon block is arranged in the suspension frame; the net holes on the left side and the right side of the hanging frame are respectively connected with one end of a hook B, the other ends of the two hooks B are respectively welded with the bottom ends of the connecting rods, the top ends of the two connecting rods are respectively welded with the bottom end of the hanging rod, a hook A is welded at the top end of the hanging rod, and the hook A penetrates through the net holes of the first filter screen and is hung on the net holes of the first filter screen;
the left inner side wall and the right inner side wall of the sewer pipeline are respectively provided with a slideway B, and the slideways B are positioned at the lower sides of the slideways A; the slideway B is arranged on the left inner side wall of the sewer pipeline and is higher than the slideway B arranged on the right inner side wall of the sewer pipeline;
a second filter screen is arranged at the bottom of the hanging frame; sliding blocks are welded at the left end and the right end of the second filter screen respectively; the second filter screen is respectively connected with the inner side wall of the sewer pipeline in a sliding way through a sliding block and a slide way B; the second filter screen is obliquely arranged inside the sewer pipeline; one end of a spring is welded at the bottom of the sliding block, and the other end of the spring is welded with the bottom of the slideway B;
a discharge port is formed in the rear side wall of the sewer pipeline, and the discharge port and a second filter screen in the sewer pipeline are positioned on the same horizontal plane; the welding of discharge gate department has the one end of guide board, the other end of guide board extends to the inside of waste residue case.
2. The town road diversion type drainage pipeline according to claim 1, wherein the number of the threaded pipes is N, and N is more than or equal to 2.
3. The town road diversion type drainage pipeline according to claim 1, wherein the chute A is of an annular structure.
4. The town road diversion type drainage pipeline according to claim 1, wherein the first filter screen is made of metal.
5. The municipal road diversion type drainage pipeline according to claim 1, wherein the number of the suspension frames is M, M is more than or equal to 2, and the frame body of each suspension frame is of a net structure.
6. The town road diversion type drainage pipeline according to claim 1, wherein the second filter screen is made of metal.
7. The town road diversion type drainage pipeline according to claim 1, wherein the cross section of said slide block is of a T-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020589619.1U CN212317097U (en) | 2020-04-20 | 2020-04-20 | Town road shunting drainage pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020589619.1U CN212317097U (en) | 2020-04-20 | 2020-04-20 | Town road shunting drainage pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212317097U true CN212317097U (en) | 2021-01-08 |
Family
ID=74031978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020589619.1U Expired - Fee Related CN212317097U (en) | 2020-04-20 | 2020-04-20 | Town road shunting drainage pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212317097U (en) |
-
2020
- 2020-04-20 CN CN202020589619.1U patent/CN212317097U/en not_active Expired - Fee Related
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |