| Patents for E03F 5 - Sewerage structures (11,230) |
|---|
| 07/11/1978 | US4099274 Thermoplastic article having accessible wall cavities therein for reception and retention of securing means |
| 06/06/1978 | US4092747 Odor trap for drain |
| 06/06/1978 | US4092745 Drain structure |
| 05/09/1978 | US4088149 Check valve structure for use in drains |
| 03/28/1978 | US4080984 Sump and sump pump cover |
| 02/21/1978 | US4075095 Filtration, settling, backwashing |
| 02/21/1978 | US4074686 Manually closable anti-backup trap |
| 02/21/1978 | US4074684 Drain system for protecting buildings against flooding and method |
| 10/11/1977 | US4053414 Oil recovery apparatus |
| 09/20/1977 | US4049013 Sewage system |
| 09/06/1977 | US4046482 Protective cover for sewer grates |
| 08/30/1977 | US4045346 Basement sewer trap |
| 08/23/1977 | US4043354 Drain trap and cover construction |
| 08/16/1977 | US4042506 Apparatus for removing solid material from sewage or other liquid |
| 08/02/1977 | US4039005 Flow diversion means |
| 07/12/1977 | US4034421 Vacuum sewer system including a collecting tank |
| 05/31/1977 | US4026317 Waterseal |
| 03/01/1977 | US4010103 Skimming |
| 11/09/1976 | US3990469 Basement drainage structure |
| 09/28/1976 | US3982777 Pipe connection to manholes and the like |
| 08/10/1976 | US3973407 Drainage system |
| 07/20/1976 | US3970559 Drain guard |
| 06/08/1976 | US3962084 Rain storing tank |
| 05/25/1976 | US3959142 Manhole aerator |
| 05/18/1976 | US3957633 Sewage treatment method and apparatus |
| 04/20/1976 | US3951441 Adjustable plumbing fitting |
| 04/20/1976 | US3951172 Adjustable cleanout plumbing fitting |
| 03/23/1976 | US3945746 Grating structure for roadway storm drain inlets and the like |
| 03/02/1976 | US3941151 Vent pipe check valve |
| 01/27/1976 | US3935103 Apparatus for separating low-density liquid from a relatively more dense liquid substantially immiscible therewith |