| Patents for E03F 11 - Cesspools (352) |
|---|
| 07/29/1992 | EP0496660A1 Septic tank with incorporated liquid collector |
| 07/25/1992 | CA2059811A1 All waters septic tank with built-in liquid collector |
| 04/28/1992 | US5107892 Weir construction for liquid distributors |
| 04/14/1992 | US5104542 Dual chamber sewage treatment system |
| 03/24/1992 | US5098568 Septic tank system with controllable distribution means |
| 03/03/1992 | CA1296819C All-purpose septic tank |
| 01/07/1992 | CA2011920C Molded septic tank |
| 11/07/1991 | DE4113752A1 Mould producing hollow concrete cylinder - has plate which remains in place after concrete has hardened |
| 10/30/1991 | EP0454098A2 Process for making the bottom piece of a shaft and apparatus for carrying out the process |
| 10/29/1991 | US5061369 Sub-soil domestic wastewater treatment apparatus having wedge shaped inclined surfaces |
| 09/11/1991 | EP0445247A1 Anti-flooding sewage grinder pump liquid level control system in separately mounted canister |
| 09/03/1991 | US5044778 Linear barrier for septic tanks |
| 07/15/1991 | CA2007795A1 Hyenol pits |
| 06/26/1991 | EP0434406A2 Trickle filtration apparatus |
| 04/17/1991 | CN1050752A Advanced design for public lavatory |
| 04/10/1991 | CN1050583A Anti-flooding sewage grinder pump liqucd level control system in separately mounted canister |
| 03/26/1991 | WO1991004099A1 Anti-flooding sewage grinder pump liquid level control system in separately mounted canister |
| 03/26/1991 | CA2042050A1 Anti-flooding sewage grinder pump liquid level control system in separately mounted canister |
| 03/05/1991 | US4997562 Multi-chambered septic tank with elongated partition crossover conduits |
| 01/29/1991 | CA1279587C Pipe and its retainer in a tank |
| 10/09/1990 | US4961670 For containing liquid materials |
| 09/19/1990 | CN2062354U Combined reinforced concrete construction inspection shaft |
| 08/28/1990 | US4951914 Pipe seal assembly for poured concrete on-site waste disposal system components |
| 07/18/1990 | EP0378288A1 Water treatment apparatus |
| 05/02/1990 | CN1041805A Septic tank with automatic sewage drainer |
| 04/24/1990 | US4919343 Anti-flooding sewage grinder pump liquid level control system in separately mounted canister |
| 12/12/1989 | US4886605 All-purpose septic tank |
| 11/21/1989 | US4882046 Multi-chamber septic tank assembly |
| 11/21/1989 | US4882045 Dispersal apparatus with rotation valving |
| 06/13/1989 | US4838731 Septic tank distribution box system |
| 05/23/1989 | US4832846 Septic tank baffle |
| 04/25/1989 | US4824287 Septic system |
| 03/30/1989 | DE3731617A1 Container and individual and overall installation for biogas installations |
| 12/06/1988 | US4789487 Baffle secured to wall to control flow of waste; without box |
| 09/20/1988 | US4772389 Elbow connector for septic tank; easy cleaning and installation |
| 07/12/1988 | US4756827 Liquid flow drainage control |
| 01/05/1988 | US4717040 Rotationally moulded septic tank sleeves |
| 12/01/1987 | US4709723 Septic tank for alternative sewer systems |
| 10/07/1987 | EP0240412A1 Septic tank |
| 10/06/1987 | US4697609 Holding tank for waste fluids and process for disposing of waste fluids from recreational vehicles |
| 07/21/1987 | US4681684 Useful as either inlet sweep or outlet tee |
| 12/23/1986 | USRE32312 Reducing turbulence |
| 08/12/1986 | US4605501 Flow divider for distribution systems |
| 08/24/1983 | EP0086489A1 Waste water treatment plant |
| 08/18/1983 | WO1983002770A1 Purification installation |
| 12/14/1982 | US4363732 Inlet and outlet baffle structure for sewage treatment tanks |
| 06/15/1982 | US4334991 Baffles for septic tank ports |
| 11/03/1981 | US4298470 Sewage septic system with liquid flow drainage control |
| 11/04/1980 | US4231482 Underground storage vault |
| 08/26/1980 | US4219428 Water reservoir |
| 10/31/1978 | US4123358 Septic system liquid level control apparatus |
| 01/04/1977 | US4001108 Method for natural biochemical decomposition of latrine |