Patents
Patents for E02B 11 - Drainage of soil, e.g. for agricultural purposes (2,085)
07/1987
07/07/1987US4678367 Riser assembly for a sub-surface irrigation and drainage system
06/1987
06/23/1987CA1223128A1 Elongated bendable drainage mat
05/1987
05/19/1987US4666334 Erosion control system for bluffs located adjacent a body of water
05/05/1987US4662778 Drainage mat
04/1987
04/07/1987US4655986 Blow molded tubing with special holes and method of making same
04/02/1987DE3534499A1 Drain pipe with prominences arranged on the outer wall of the pipe to prevent root penetration
04/02/1987DE3534497A1 Apparatus for digging drainage ditches
03/1987
03/25/1987EP0215448A1 Method and device for enveloping drainage pipes
03/19/1987DE3617471A1 Preform made of concrete for dewatering structures
03/18/1987EP0214416A1 Levelling device for a drainage machine or the like
03/17/1987US4650367 Internally reinforced extruded plastic pipe
02/1987
02/24/1987US4645377 Method of causing sedimentation of sedimentary solid material transported in a body of water, such as a lake, a sea, or an ocean
01/1987
01/27/1987US4639165 Drainage tube
01/14/1987EP0208043A1 Method of producing a strip-formed filter for use in drainage
12/1986
12/16/1986CA1215241A1 Partial-seepage drainage pipe with mating sleeve
12/02/1986US4626129 Sub-soil drainage piping
11/1986
11/25/1986US4624603 Underground drain pipe
11/11/1986US4622138 Vertical drain
11/11/1986US4621945 Head control stand
11/05/1986EP0200707A2 Installation of highway drainage mat
10/1986
10/29/1986EP0199598A2 Improved land drainage system
07/1986
07/01/1986US4597693 Method and apparatus for installing highway drainage mat
06/1986
06/24/1986US4596491 Internally reinforced extruded plastic pipe
06/04/1986EP0125382B1 Drain tube having a sleeve
03/1986
03/13/1986WO1986001552A1 Ground drainage method, system for implementing such method and application of the method
02/1986
02/26/1986EP0044871B1 Method of burying wire, tube or cable under ground
02/25/1986US4572705 Revetment of cellular textile material
02/25/1986US4572700 Elongated bendable drainage mat
01/1986
01/14/1986CA1199188A1 Drainage device
08/1985
08/27/1985US4537527 Means for providing a vertical drain in soil
07/1985
07/09/1985CA1190139A1 Method for mining and reclaiming land
06/1985
06/18/1985US4523875 Auxiliary drainage system for eliminating water problems associated with a foundation of a building
06/18/1985US4523874 Plastic underdrainage tube
06/18/1985US4523613 Multi-layered corrugated conduit with "black-eye" like apertures
06/18/1985CA1188902A1 Drainage tube
04/1985
04/24/1985EP0138259A2 Drainage structure and method of making a reinforced dike slope
03/1985
03/12/1985CA1183696A1 Arrangement relating to a drainage pipe
02/1985
02/20/1985EP0133414A1 Sub-soil drainage piping
12/1984
12/25/1984US4490072 Drainage device
11/1984
11/21/1984EP0125382A1 Drain tube having a sleeve
11/07/1984EP0124500A2 Elongated bendable drainage mat
11/07/1984EP0124499A1 Method and apparatus for installing highway drainage mat
10/1984
10/02/1984US4474505 Draining, irrigating and dispersing mass
09/1984
09/19/1984EP0040621B1 An arrangement relating to a drainage pipe
08/1984
08/08/1984EP0115477A2 Draining device
08/08/1984EP0100332A4 A drainage device.
08/02/1984WO1984002937A1 Draining device
07/1984
07/31/1984US4462715 System for the one-step dewatering of a trench and the construction of a pipeline bed
07/31/1984US4462713 Method for mining and reclaiming land
07/17/1984CA1170848A1 Plastic underdrainage tube
07/03/1984US4457646 Impoundment and diversion systems for preventing or mitigating flooding
07/03/1984CA1170040A1 Ditching method and device
06/1984
06/19/1984US4455105 Procedure and means for creating a vertical drain
05/1984
05/16/1984EP0108269A2 A method of causing sedimentation of sedimentary solid material transported in a body of water, such as a lake, a sea, or an ocean
05/15/1984US4448567 Method for installing lines, pipes or cables underground
05/01/1984US4445542 Arch end cap
04/1984
04/26/1984WO1984001590A1 A method of causing sedimentation of sedimentary solid material transported in a body of water, such as a lake, a sea, or an ocean
03/1984
03/27/1984US4438576 Device for ditching a drain in soil
03/21/1984EP0103343A2 Perforated plastic pipe and punch for forming perforations therein
03/13/1984US4436568 In situ precipitated fibrous laminate and method of producing same
02/1984
02/15/1984EP0100560A2 Shaped member forming the playing lines of tennis courts
02/15/1984EP0100332A1 A drainage device
12/1983
12/28/1983EP0097098A1 Method of retaining the earth after excavating sloping soil, among others for the passage of a conduit in a trench
12/20/1983US4421810 Polymeric ribbon wound around tubular polymeric sheet
12/06/1983CA1158054A1 Wall drainage system
11/1983
11/02/1983EP0052135B1 Procedure and means for creating a vertical drain
10/1983
10/25/1983US4411555 Draining, irrigating and dispersing mass
10/05/1983EP0020630B1 Drain pipe
09/1983
09/06/1983CA1153213A1 Procedure and means for creating a vertical drain
08/1983
08/31/1983EP0086996A1 Method of producing fibre-reinforced flat bodies
08/18/1983WO1983002790A1 A drainage device
06/1983
06/28/1983US4390383 Method of making plastic pipes having walls with lengthwise extending channels
06/21/1983US4389138 Drain pipe
05/1983
05/31/1983CA1147152A1 Perforation formed tube having alternating thick and thin wall portions
05/03/1983CA1145574A2 Draining, irrigating and dispersing mass
04/1983
04/06/1983EP0075993A1 Drainage tube
03/1983
03/09/1983EP0073601A1 Improvements in drainage blocks
03/01/1983CA1141978A1 Drain tile and pile fabric filter sleeve
12/1982
12/21/1982CA1137767A1 Draining, irrigating and dispersing mass
12/07/1982CA1136869A1 Drain pipe
11/1982
11/23/1982US4360042 Arched conduit with improved corrugations
10/1982
10/12/1982US4353859 Manufacture of a plastic ground drainage component
10/12/1982US4353524 Fluid control gate
10/12/1982CA1133403A1 Arched conduit and method of handling same
09/1982
09/07/1982US4348135 Draining, irrigating and aeration of soil and heating or cooling of soil
07/1982
07/27/1982CA1128558A1 Trenching device equiped with a disk and a deflector
05/1982
05/26/1982EP0052135A1 Procedure and means for creating a vertical drain.
05/11/1982US4329083 Methods of laying underground conduits
02/1982
02/03/1982EP0044871A1 Method of burying wire, tube or cable under ground
12/1981
12/29/1981US4307975 Water flow control system
12/09/1981EP0041425A1 Method of making drain trenches
11/1981
11/26/1981WO1981003354A1 Procedure and means for creating a vertical drain
11/03/1981CA1111780A1 Prefabricated subsurface drains
10/1981
10/13/1981US4294638 Circular extrusion method providing for rotation around the extrusion opening
10/06/1981US4293294 Circular extrusion apparatus providing for rotation around the extrusion opening
10/06/1981US4293238 Ditchless drainlayer
10/06/1981US4293237 Irrigation and drainage apparatus
09/1981
09/08/1981US4288321 Drain tile and pile fabric filter sleeve
09/08/1981US4288174 System for groundwater flow control
09/01/1981US4286808 Snap-in tee connector
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