| Patents for E03F 7 - Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools (2,571) |
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| 05/27/1998 | EP0844073A1 A tubular product and an extrusion apparatus and method |
| 05/26/1998 | US5754987 Vacuum unit and a vacuum toilet system comprising such a unit |
| 05/14/1998 | DE19646223A1 Weir for drain-channel |
| 04/23/1998 | DE19640697A1 Device for transport and manipulation of tool implement within drain pipe of channel network |
| 04/21/1998 | US5740830 Testing of plumbing installations |
| 03/25/1998 | EP0831299A1 Device for observing inner wall surface of conduit |
| 03/25/1998 | CN2276952Y End sealing device for drainage tube |
| 03/18/1998 | EP0829585A2 Sewer cleaning vehicle |
| 03/17/1998 | US5728294 Drain closure apparatus |
| 03/17/1998 | US5727593 Tide gate valve with curvilinear bill |
| 03/12/1998 | WO1998010149A1 A device for preventing rats and the like animals from penetrating through a draining outlet |
| 03/12/1998 | WO1998010148A1 Underground pipe repair |
| 03/10/1998 | US5725328 System and process for relining sewerage pipe sections |
| 03/04/1998 | EP0826838A2 Vacuum valve controller |
| 02/19/1998 | DE19635819C1 Waste management vehicle with suction container connected via pipe conduit to four-way tap |
| 02/05/1998 | DE19630709A1 Inspection and leakage testing and possibly of rehabilitation of sewer pipes and side ducts |
| 02/04/1998 | EP0821753A1 Sump-vented controller mechanism for vacuum sewerage transport system |
| 01/21/1998 | CN1171141A Water flushing closet |
| 12/31/1997 | CN2271576Y Dredging device for air compressing duct |
| 12/30/1997 | US5702595 Catch basin guard |
| 12/17/1997 | CN2270764Y Sanitary car for emptying sewer or cesspool |
| 12/17/1997 | CN2270763Y Sludge removing device |
| 12/17/1997 | CN1167743A Method and device for collection and treatment of excrement and urine |
| 12/16/1997 | US5699049 Monitoring system for non-pressurized conduit |
| 11/19/1997 | CN2268066Y Over-flow-stop device |
| 11/18/1997 | US5687761 Sewer backup indicator apparatus |
| 11/05/1997 | EP0805239A1 Hydrodynamic sewer cleaning and inspection device |
| 10/23/1997 | DE19615055A1 Method for sealing house openings, especially doors and windows of basement area |
| 10/21/1997 | US5679246 Spill containment system |
| 10/16/1997 | WO1997038177A1 Method and apparatus for reducing saline infiltration in coastal sewerage systems |
| 09/25/1997 | WO1997035230A1 Device with a probe for investigating pipe interiors |
| 09/25/1997 | DE19611107A1 Lorry with fuel tank and suction hose |
| 09/25/1997 | DE19610747A1 Sewage line with measurement- and throttling-path |
| 09/24/1997 | EP0796717A1 A liner for manhole and a method for lining a manhole |
| 09/23/1997 | US5669982 Method for collecting wash water or other fluids applied to articles |
| 09/19/1997 | CA2200262A1 A liner for manhole and a method for lining a manhole |
| 09/18/1997 | DE19653103A1 Counterweighted plate in trap for rat |
| 09/17/1997 | EP0795653A2 Securing device for a sealing device |
| 09/12/1997 | WO1997033212A1 Autonomous mobile robot system for sensor-based and map-based navigation in pipe networks |
| 09/11/1997 | DE19607913A1 Cleaning device for buried drain-pipe |
| 09/10/1997 | CN2262062Y Cleaning vehicle for drainage pipe |
| 09/10/1997 | CN2262061Y Multifunctional material taking device |
| 09/04/1997 | DE19549473A1 Camera system for inspecting pipelines |
| 08/28/1997 | WO1997022030A3 Camera system for pipe inspection |
| 08/27/1997 | CN1158161A Apparatus for reference laser level setting |
| 08/26/1997 | US5660725 Gully emptier having filter provided pipe and weight compensating spring |
| 08/21/1997 | DE19605949A1 Winch for winding cable or hose for robot vehicle servicing underground drains |
| 08/13/1997 | CN2259447Y Automatic drainage equipment without position limitation |
| 07/30/1997 | EP0786059A1 Stop slide valve with a housing and a joint pipe |
| 07/17/1997 | DE19620239C1 Pipeline maintenance method for water drains |
| 07/17/1997 | DE19601253A1 Tube cleaning nozzle with video camera |
| 07/10/1997 | DE19607267C1 Inspecting, by maintenance hose or cable insertion, cast-iron pipeline |
| 07/09/1997 | EP0783056A1 Device for dividing with control an arriving fluid flow |
| 07/01/1997 | CA2114602C Backwater valve |
| 06/19/1997 | WO1997022030A2 Camera system for pipe inspection |
| 06/19/1997 | DE19546510A1 Camera system for inspecting pipelines |
| 06/12/1997 | WO1997021005A1 Method of influencing a flow of waste water |
| 06/12/1997 | DE19546102A1 Lavatory pan accessory to prevent entry of rat |
| 06/11/1997 | CN1151775A A vacuum unit and a vacuum toilet system comprising such a unit |
| 06/10/1997 | US5636648 Mobile rotator jet sewer cleaner |
| 06/05/1997 | DE19610475C1 Device for locating leaks in pipes and in pipe connections esp. sewage, drain and waste water pipes |
| 06/04/1997 | CN2255461Y Pressure obstruction-removing device |
| 05/27/1997 | US5633809 Multi-function flow monitoring apparatus with area velocity sensor capability |
| 05/27/1997 | US5632889 Insert for placing in catch basin including cartridge containing absorbent particles which absorb liquid hydrocarbons from water flowing therethrough |
| 05/15/1997 | DE19543123C1 Sewage water raising machine |
| 05/15/1997 | DE19541950A1 Waste collection pump tanker vehicle |
| 05/14/1997 | EP0773427A1 Apparatus for reference laser level setting |
| 05/13/1997 | USRE35503 Apparatus and technique for metering liquid flow |
| 05/09/1997 | WO1997016711A1 Sewer construction |
| 05/07/1997 | DE19614610A1 Vacuum drainage system for toilet |
| 04/24/1997 | DE19538848A1 Vehicle for cleaning channels |
| 04/24/1997 | DE19538846A1 Vehicle for cleaning channels of dirt |
| 04/24/1997 | DE19538845A1 Vehicle for cleaning channels of dirt |
| 04/23/1997 | EP0769593A1 Method and device for cleaning channels |
| 04/23/1997 | EP0769592A1 Device for picking up and transporting sludge |
| 04/09/1997 | EP0659270B1 Process and device for inspecting just as servicing and repairing subsidiary canals branching off from a main drain |
| 04/03/1997 | WO1997012098A1 Circulating drainage system for sewage pipe installation work |
| 04/03/1997 | WO1997012097A1 Circulating drainage system for sewage pipe installation work |
| 03/25/1997 | CA2003152C Flash flood control units for housing |
| 03/21/1997 | CA2158707A1 Sealing disc used in hydraulic testing of plumbing system |
| 03/20/1997 | DE19534241A1 Water treatment tank by=pass unit with shut=off devices |
| 03/20/1997 | DE19533875A1 Sewage effluent measurement in domestic and industrial premises |
| 03/19/1997 | EP0763635A1 Gully cleaning device |
| 03/19/1997 | EP0763633A1 Membrane controlled vacuum sewer system |
| 03/06/1997 | DE19622982A1 Backflow prevention device for waste water systems |
| 03/05/1997 | EP0760039A1 A vacuum unit and a vacuum toilet system comprising such a unit |
| 02/27/1997 | WO1997006966A1 Wheeled carriage with adjustable axles to vary wheel spacing |
| 02/27/1997 | WO1997001429A3 An extrusion apparatus and method, a tubular product, and a pipe |
| 01/16/1997 | WO1997001429A2 An extrusion apparatus and method, a tubular product, and a pipe |
| 01/16/1997 | CA2233030A1 A tubular product and an extrusion apparatus and method |
| 01/16/1997 | CA2225419A1 An extrusion apparatus and method, a tubular product, and a pipe |
| 01/02/1997 | DE19621040A1 Sliding gate for rain or drainage layouts |
| 12/31/1996 | US5588458 Vacuum valve controller for vacuum sewer system |
| 12/24/1996 | US5587926 Refrigerated fluid sampling apparatus and method with variable volume sampling system |
| 12/19/1996 | DE19521895A1 Sewer pipe and surrounding region examination method |
| 12/18/1996 | CN2242913Y Anti-theft manhole cover capable of fully opening |
| 12/17/1996 | US5584315 Check valve assembly and method for mounting and installing check valves within a housing |
| 12/10/1996 | US5582720 Drain closure apparatus |
| 12/10/1996 | US5581934 Rodent screen |
| 11/28/1996 | WO1996037755A1 Apparatus for reference laser level setting |