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