CN111910730B - Municipal drainage ditch and construction method thereof - Google Patents
Municipal drainage ditch and construction method thereof Download PDFInfo
- Publication number
- CN111910730B CN111910730B CN202010506320.XA CN202010506320A CN111910730B CN 111910730 B CN111910730 B CN 111910730B CN 202010506320 A CN202010506320 A CN 202010506320A CN 111910730 B CN111910730 B CN 111910730B
- Authority
- CN
- China
- Prior art keywords
- vertical shaft
- pipe
- layer
- cement
- bottom plate
- 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.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
- E03F3/046—Open sewage channels
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
Abstract
A municipal drainage ditch and a construction method thereof belong to the field of municipal drainage. A fine sand layer, a gravel layer and a cement cushion layer are laid in the groove body from bottom to top; the bottom plate II is fixedly arranged at the bottom of the vertical shaft II, and a gravel layer and a fine sand layer are arranged at the lower end of the bottom plate II; the masonry layer is fixedly connected to the annular base plate and is attached to the inner wall of the vertical shaft II; the cement layer is arranged on the inner wall of the masonry layer; the well lid II is movably connected to the upper end of the masonry layer; the pipe is laid at the bottom of the ground, one end of the pipe is communicated with the groove body, the pipe penetrates through the vertical shaft II, and the middle part of the pipe is communicated with the vertical shaft II. The invention is provided with a vertical shaft II, the lower end of an annular base plate of the vertical shaft II is directly connected with soil, rainwater can directly permeate into deep soil after entering the vertical shaft II, and the flood discharge capacity of the drainage ditch is improved; and the vertical shaft I is also arranged, so that when rainwater is large, the domestic garbage can directly flow into the vertical shaft I through the pipe, and the aim of reducing the random drifting of the domestic garbage along with the rainwater is fulfilled.
Description
Technical Field
The invention relates to a municipal drainage ditch and a construction method thereof, and belongs to the field of municipal drainage.
Background
The city is in order to prevent that the too much influence pedestrian and vehicle trip of downtown ponding, mostly sets up the escape canal. The drainage function of the drainage ditch used at present can only be realized, but the drainage capacity of the drainage ditch used at present is limited, and when the rainfall is large, excessive road water accumulation still occurs, so that the traveling of pedestrians and vehicles is influenced; when the rainwater is great, domestic waste in the escape canal easily overflows the escape canal and drifts about, influences the environment in the city, and cleaner clearance is more troublesome.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a municipal drainage ditch and a construction method thereof.
The invention achieves the purpose, and adopts the following technical scheme:
a municipal drainage ditch comprises a ditch body; the municipal drainage ditch also comprises a pipe, a masonry layer, a cement layer, a well cover II, a vertical shaft II, a cement cushion layer, a gravel layer, a fine sand layer, an annular base plate, a strut and a bottom plate II; a fine sand layer, a gravel layer and a cement cushion layer are laid in the groove body from bottom to top; the vertical shaft II is arranged on the side face of the groove body, and the distance between the vertical shaft II and the groove body is 2-3 m; the bottom plate II is fixedly arranged at the bottom of the vertical shaft II, and a gravel layer and a fine sand layer are arranged at the lower end of the bottom plate II; the lower end of the strut is fixedly connected to the bottom plate II, and the upper end of the strut is fixedly connected with an annular base plate; the masonry layer is fixedly connected to the annular base plate and is attached to the inner wall of the vertical shaft II; the cement layer is arranged on the inner wall of the masonry layer; the well lid II is movably connected to the upper end of the masonry layer; the pipe is laid underground, one end of the pipe is communicated with the groove body, the pipe penetrates through the vertical shaft II, and the middle part of the pipe is communicated with the vertical shaft II.
The invention discloses a construction method of a municipal drainage ditch, which comprises the following steps:
1) firstly digging out a groove body, a vertical shaft I, a vertical shaft II and a pre-buried pit for laying pipes, wherein the pre-buried pit is communicated with the groove body, the vertical shaft I and the vertical shaft II;
2) laying pipes, and then filling and leveling the pre-buried pits of the pipes by using soil;
3) paving a fine sand layer, a gravel layer and a bottom plate II in the vertical shaft II from bottom to top; a fine sand layer, a gravel layer and a cement cushion layer are laid in the groove body from bottom to top;
4) a pillar and an annular base plate are laid at the upper end of a bottom plate II in the shaft II from bottom to top;
5) paving a masonry layer and a cement layer on the annular base plate in the vertical shaft II from outside to inside, and paving a well cover II at the uppermost end;
6) bottom plate I, cement pipeline, well lid I are laid from bottom to top in shaft I.
Compared with the prior art, the invention has the beneficial effects that: the invention is provided with a vertical shaft II, the lower end of an annular base plate of the vertical shaft II is directly connected with soil, rainwater can directly permeate into deep soil after entering the vertical shaft II, and the flood discharge capacity of the drainage ditch is improved; and still be equipped with shaft I, when the rainwater is great, can directly flow the domestic waste into shaft I through the pipe, reduce domestic waste and drift at will along with the rainwater.
Drawings
FIG. 1 is a front view of a municipal drain of the invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1; in the figure, the arrow direction is the water flow direction;
FIG. 3 is a front view of a pipe of a municipal drain of the invention;
FIG. 4 is a front view of a secondary pipe of a municipal drainage ditch of the invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
The first embodiment is as follows: as shown in fig. 1 to 4, the present embodiment describes a municipal drainage ditch, including a ditch body; the municipal drainage ditch further comprises a pipe 5, a masonry layer 6, a cement layer 7, a well lid II 8, a vertical shaft II 9, a cement cushion layer 11, a gravel layer 12, a fine sand layer 13, an annular base plate 14, a strut 15 and a bottom plate II 16; a fine sand layer 13, a gravel layer 12 and a cement cushion layer 11 are laid in the groove body from bottom to top; the vertical shaft II 9 is arranged on the side face of the groove body, and the distance between the vertical shaft II 9 and the groove body is 2-3 m; the bottom plate II 16 is fixedly arranged at the bottom of the vertical shaft II 9, and the lower end of the bottom plate II 16 is provided with a gravel layer 12 and a fine sand layer 13; the lower end of the strut 15 is fixedly connected to the bottom plate II 16, and the upper end of the strut 15 is fixedly connected with the annular base plate 14; the masonry layer 6 is fixedly connected to the annular backing plate 14, and the masonry layer 6 is attached to the inner wall of the vertical shaft II 9; the cement layer 7 is arranged on the inner wall of the masonry layer 6; the well lid II 8 is movably connected to the upper end of the masonry layer 6; the pipe 5 is laid underground, one end of the pipe 5 is communicated with the groove body, the pipe 5 penetrates through the shaft II 9, and the middle part of the pipe 5 is communicated with the shaft II 9.
The second embodiment is as follows: as shown in fig. 1 to 4, this embodiment is further described as an embodiment one, and the depth of the shaft ii 9 is greater than twice the depth of the groove body. The rainwater can permeate into the deep soil more quickly, and the flood discharge capacity of the invention is improved.
The third concrete implementation mode: as shown in fig. 1 to 4, this embodiment is further explained with respect to the first embodiment, and the tube 5 includes a tube main body 5-1; the middle position of the pipe main body 5-1 is provided with a plurality of through holes 5-2 penetrating through the wall thickness of the pipe main body 5-1; the through hole 5-2 is positioned in the shaft II 9. For draining the rainwater in the pipe 5 into the shaft ii 9.
The fourth concrete implementation mode: as shown in fig. 1-4, this embodiment is further described with respect to the first embodiment, and the pipe 5 further includes a secondary pipe 5-4; the auxiliary pipe 5-4 is sleeved on the outer side wall of the pipe main body 5-1, and a rectangular hole I5-4-1 is formed in the auxiliary pipe 5-4; the upper end of the side wall of the pipe main body 5-1 is provided with a rectangular hole II 5-3; the secondary pipes 5-4 are located in a shaft II 9. The garbage left in the pipe 5 can be conveniently cleaned by a cleaner.
The fifth concrete implementation mode: as shown in fig. 1-4, this embodiment is further described as embodiment one, and the maximum distance of the secondary pipes 5-4 from the wellhead of the shaft ii 9 is 40 cm. The problem that the distance between the auxiliary pipe 5-4 and the wellhead of the vertical shaft II 9 is too large, so that a cleaner is inconvenient to clean the inside of the pipe 5 is solved.
The sixth specific implementation mode: as shown in fig. 1 to 4, the present embodiment is further described with respect to a first embodiment, and the municipal drainage ditch further comprises a cement pipeline 1, a well cover i 2, a bottom plate i 3, and a shaft i 4; the distance between the vertical shaft I4 and the vertical shaft II 9 is 1.5 m; a bottom plate I3 is laid at the bottom of the vertical shaft I4; a drain hole vertically penetrating through the bottom plate I3 is formed in the bottom plate I3; the cement pipeline 1 is fixedly connected to the bottom plate I3, and the cement pipeline 1 is attached to the inner wall of the vertical shaft I4; the well cover I2 is movably connected to the upper end of the cement pipeline 1; the other end of the pipe 5 passes through the cement pipeline 1 and is communicated with the cement pipeline 1. The shaft I4 has the function of collecting domestic garbage together when the flood discharge device is used for discharging the flood, and the working strength of cleaning workers is reduced.
The seventh embodiment: as shown in fig. 1-4, this embodiment is further described with respect to the first embodiment, where the pipe 5 is connected to the channel body at a higher level than the pipe 5 is connected to the shaft i 4. Convenient for rainwater circulation.
The specific implementation mode is eight: as shown in fig. 1-4, this embodiment is further described with respect to the first embodiment, where the depth of shaft i 4 is half the depth of shaft ii 9. The convenience of workers is to pick up the household garbage in the vertical shaft I4.
The specific implementation method nine: as shown in fig. 1 to 4, the present embodiment is further described with respect to the first embodiment, and the municipal drainage ditch further comprises a cement bump 10; the cement bump 10 is fixedly arranged on the side wall of the cement cushion layer 11 on the groove body, the cement bump 10 abuts against a pipe opening of the pipe 5 communicated with the groove body, and water flow in the groove body firstly flows through the cement bump 10. Cement lug 10's effect is, this internal rainwater of slot flows through cement lug 10 earlier then just through the mouth of pipe 5, when rainwater flows through cement lug 10, because the lateral wall of the relative slot body of cement lug 10 is protruding, when making the rainwater through the back of cement lug 10 scouring face, can form a little vortex, and the mouth of pipe setting of pipe 5 is in this position, make things convenient for rainwater and domestic waste admission pipe 5 like this in, avoid domestic waste to flow along the slot body always, the effect is collected in the influence.
The detailed implementation mode is ten: the embodiment describes a construction method of a municipal drainage ditch, which comprises the following steps:
1) firstly digging out a groove body, a vertical shaft I4, a vertical shaft II 9 and a pre-buried pit for laying the pipe 5, which is communicated with the groove body, the vertical shaft I4 and the vertical shaft II 9, by using a trencher;
2) laying the pipe 5, and then filling the pre-buried pit of the pipe 5 with soil;
3) paving a fine sand layer 13, a gravel layer 12 and a bottom plate II 16 in the vertical shaft II 9 from bottom to top; a fine sand layer 13, a gravel layer 12 and a cement cushion layer 11 are laid in the groove body from bottom to top;
4) a strut 15 and an annular base plate 14 are laid at the upper end of a bottom plate II 16 in the shaft II 9 from bottom to top;
5) paving a masonry layer 6 and a cement layer 7 on an annular base plate 14 in the vertical shaft II 9 from outside to inside, and paving a well lid II 8 at the uppermost end;
6) bottom plate I3, cement pipeline 1, well lid I2 are laid from bottom to top in shaft I4.
The working principle of the invention is as follows: when the rainwater amount is large, rainwater and domestic garbage flow into the groove body and flow into the pipe 5, a plurality of through holes 5-2 are formed in the pipe 5 inside the vertical shaft II 9, the rainwater flows into the vertical shaft II 9 through the through holes 5-2 when passing through the part, the depth of the vertical shaft II 9 is larger than that of the groove body, a soil layer is arranged between the annular base plate 14 and the bottom plate II 16, the rainwater directly permeates deep soil after entering the bottom of the vertical shaft II 9, and the vertical shaft II 9 is reinforced through the masonry layer 6, the cement layer 7, the bottom plate II 16 and the support columns 15, so that the service life of the vertical shaft II is prolonged; the residual rainwater and domestic garbage in the pipe 5 finally flow into the vertical shaft I4, a drain hole is formed in a bottom plate I3 in the vertical shaft I4, the rainwater directly permeates into the ground bottom, the domestic garbage is stored in the vertical shaft I4, after a period of time, a cleaner can clean the domestic garbage only by opening the vertical shaft I4, continuous stooping picking along the groove body is not needed, and the working strength of the cleaner is reduced; the auxiliary pipe 5-4 has the effects that when a cleaner cleans garbage in the vertical shaft I4, the cleaner can directly open the well lid II 8 on the vertical shaft II 9, then the auxiliary pipe 5-4 is rotated to enable the rectangular hole II 5-3 on the pipe main body 5-1 to be communicated with the rectangular hole I5-4-1 on the auxiliary pipe 5-4, and then the garbage stored at the position of the through hole 5-2 is cleaned out to prevent the through hole 5-2 from being blocked and influence on the drainage effect; cement lug 10's effect is, this internal rainwater of slot flows through cement lug 10 earlier then just through the mouth of pipe 5, when rainwater flows through cement lug 10, because the lateral wall of the relative slot body of cement lug 10 is protruding, when making the rainwater through the back of cement lug 10 scouring face, can form a little vortex, and the mouth of pipe setting of pipe 5 is in this position, make things convenient for rainwater and domestic waste admission pipe 5 like this in, avoid domestic waste to flow along the slot body always, the effect is collected in the influence.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A municipal drainage ditch comprises a ditch body; the method is characterized in that: the municipal drainage ditch further comprises a pipe (5), a masonry layer (6), a cement layer (7), a well lid II (8), a vertical shaft II (9), a cement cushion layer (11), a gravel layer (12), a fine sand layer (13), an annular base plate (14), a strut (15) and a bottom plate II (16); a fine sand layer (13), a gravel layer (12) and a cement cushion layer (11) are laid in the groove body from bottom to top; the vertical shaft II (9) is arranged on the side face of the groove body, and the distance between the vertical shaft II (9) and the groove body is 2-3 m; the bottom plate II (16) is fixedly arranged at the bottom of the vertical shaft II (9), and a gravel layer (12) and a fine sand layer (13) are arranged at the lower end of the bottom plate II (16); the lower end of the strut (15) is fixedly connected to the bottom plate II (16), and the upper end of the strut (15) is fixedly connected with an annular base plate (14); the masonry layer (6) is fixedly connected to the annular backing plate (14), and the masonry layer (6) is attached to the inner wall of the vertical shaft II (9); the cement layer (7) is arranged on the inner wall of the masonry layer (6); the well lid II (8) is movably connected to the upper end of the masonry layer (6); the pipe (5) is laid underground, one end of the pipe (5) is communicated with the groove body, the pipe (5) penetrates through the vertical shaft II (9), and the middle part of the pipe (5) is communicated with the vertical shaft II (9);
the tube (5) comprises a tube body (5-1); a plurality of through holes (5-2) penetrating through the wall thickness of the pipe main body (5-1) are formed in the middle of the pipe main body (5-1); the through hole (5-2) is positioned in the vertical shaft II (9);
the pipe (5) further comprises an auxiliary pipe (5-4); the auxiliary pipe (5-4) is sleeved on the outer side wall of the pipe main body (5-1), and a rectangular hole I (5-4-1) is formed in the auxiliary pipe (5-4); the upper end of the side wall of the pipe main body (5-1) is provided with a rectangular hole II (5-3); the auxiliary pipe (5-4) is positioned in the vertical shaft II (9);
the maximum distance between the auxiliary pipe (5-4) and the wellhead of the vertical shaft II (9) is 40 cm;
a municipal drainage ditch further comprises a cement bump (10); the cement bump (10) is fixedly arranged on the side wall of the cement cushion layer (11) on the groove body, the cement bump (10) abuts against a pipe opening of the pipe (5) communicated with the groove body, and water flow in the groove body firstly flows through the cement bump (10).
2. The municipal drain of claim 1, wherein: the depth of the vertical shaft II (9) is greater than twice of the depth of the groove body.
3. The municipal drain of claim 2, wherein: the municipal drainage ditch further comprises a cement pipeline (1), a well cover I (2), a bottom plate I (3) and a vertical shaft I (4); the distance between the vertical shaft I (4) and the vertical shaft II (9) is 1.5 m; a bottom plate I (3) is laid at the bottom of the vertical shaft I (4); a drain hole vertically penetrating through the bottom plate I (3) is formed in the bottom plate I (3); the cement pipeline (1) is fixedly connected to the bottom plate I (3), and the cement pipeline (1) is attached to the inner wall of the vertical shaft I (4); the well cover I (2) is movably connected to the upper end of the cement pipeline (1); the other end of the pipe (5) penetrates through the cement pipeline (1) and is communicated with the cement pipeline (1).
4. The municipal drain of claim 3, wherein: the connecting end of the pipe (5) and the groove body is higher than the connecting end of the pipe (5) and the shaft I (4).
5. The municipal drain of claim 4, wherein: the depth of the vertical shaft I (4) is half of that of the vertical shaft II (9).
6. The method for constructing a municipal drainage ditch according to claim 5, wherein: the method comprises the following steps:
1) firstly digging out a groove body, a vertical shaft I (4), a vertical shaft II (9) and a pre-buried pit for laying a pipe (5) by a trencher, wherein the pre-buried pit is communicated with the groove body, the vertical shaft I (4) and the vertical shaft II (9);
2) laying the pipe (5), and then filling the pre-buried pit of the pipe (5) with soil;
3) paving a fine sand layer (13), a gravel layer (12) and a bottom plate II (16) in the vertical shaft II (9) from bottom to top; a fine sand layer (13), a gravel layer (12) and a cement cushion layer (11) are paved in the groove body from bottom to top;
4) a pillar (15) and an annular base plate (14) are laid at the upper end of a bottom plate II (16) in the shaft II (9) from bottom to top;
5) paving a masonry layer (6) and a cement layer (7) on an annular base plate (14) in the vertical shaft II (9) from outside to inside, and paving a well lid II (8) at the uppermost end;
6) a bottom plate I (3), a cement pipeline (1) and a well lid I (2) are paved in a vertical shaft I (4) from bottom to top.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010506320.XA CN111910730B (en) | 2020-06-05 | 2020-06-05 | Municipal drainage ditch and construction method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010506320.XA CN111910730B (en) | 2020-06-05 | 2020-06-05 | Municipal drainage ditch and construction method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
CN111910730A CN111910730A (en) | 2020-11-10 |
CN111910730B true CN111910730B (en) | 2021-11-02 |
Family
ID=73237475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010506320.XA Active CN111910730B (en) | 2020-06-05 | 2020-06-05 | Municipal drainage ditch and construction method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111910730B (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1128456A (en) * | 1997-07-09 | 1999-02-02 | Haneda Hume Pipe Co Ltd | Infiltration structure |
CN106087648A (en) * | 2016-08-15 | 2016-11-09 | 东南大学 | A kind of urban road special Quick drainage system |
CN106193247A (en) * | 2016-07-18 | 2016-12-07 | 浙江水利水电学院 | Integral rain system and construction method thereof for sponge city |
CN209457126U (en) * | 2018-12-22 | 2019-10-01 | 扬州市城市规划设计研究院有限责任公司 | A kind of rainwater ecological filter well |
-
2020
- 2020-06-05 CN CN202010506320.XA patent/CN111910730B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1128456A (en) * | 1997-07-09 | 1999-02-02 | Haneda Hume Pipe Co Ltd | Infiltration structure |
CN106193247A (en) * | 2016-07-18 | 2016-12-07 | 浙江水利水电学院 | Integral rain system and construction method thereof for sponge city |
CN106087648A (en) * | 2016-08-15 | 2016-11-09 | 东南大学 | A kind of urban road special Quick drainage system |
CN209457126U (en) * | 2018-12-22 | 2019-10-01 | 扬州市城市规划设计研究院有限责任公司 | A kind of rainwater ecological filter well |
Also Published As
Publication number | Publication date |
---|---|
CN111910730A (en) | 2020-11-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105297872A (en) | LID type city rainwater closed conduit with functions of water permeating, storing, purifying and draining | |
CN205224230U (en) | LID type urban rainwater oozes and holds clean drainage closed conduit | |
CN109826065B (en) | High-fill roadbed protection system and construction method thereof | |
CN111042293A (en) | Construction process of road central green belt seepage-proofing drainage structure | |
CN208650225U (en) | A kind of infiltration type drainage ditch | |
CN106013400A (en) | Integrated pipe network and water storage and drainage system for pavements | |
JP5083602B2 (en) | Spill control street | |
CN110172884B (en) | Mountain highway subgrade and construction method | |
CN210177294U (en) | Mountain area highway subgrade | |
CN210797803U (en) | Anti-blocking drain pipe | |
CN205134481U (en) | Highway superelevation excavation highway section hydrocone type drainage system | |
CN111910730B (en) | Municipal drainage ditch and construction method thereof | |
CN109440811A (en) | A kind of gully type Dumping Sites loose stone slag blocking wall and surface water channel drainage sunk well technique | |
CN210507029U (en) | Road drainage structure | |
CN213358194U (en) | Permeable pavement structure | |
CN210395567U (en) | Road bed groundwater infiltration structure | |
JPS6022153Y2 (en) | Device for storing, irrigating, and infiltrating rainwater from roadside gutters | |
CN211734926U (en) | Quick drainage system in sponge city ground | |
CN211080303U (en) | Take underground rainwater to collect utility tunnel structure of function | |
CN207176874U (en) | A kind of pavement comprehensive pipe network and drainage system | |
CN215518216U (en) | Permeable pavement | |
CN212153647U (en) | Drainage facility suitable for water source area protection district excavation highway section | |
CN208430397U (en) | A kind of high-fill roadbed structure | |
CN212956014U (en) | Highway laying structure | |
CN214219246U (en) | Municipal works road laying structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |