which are pushed upwards by means of own buoyancy, springs, counterweights, or the like

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Patents Grantslast 30 patents

Information Patent Grant
Siphon flush apparatus
- Patent number 6,473,912
- Issue date Nov 5, 2002
- Jose-Jaime Preciado-Villanueva
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Syphonic flush toilet
- Patent number 4,965,892
- Issue date Oct 30, 1990
- James B. McDonough
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
3094706
- Patent number 3,094,706
- Issue date Jun 25, 1963
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
2593061
- Patent number 2,593,061
- Issue date Apr 15, 1952
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
2580898
- Patent number 2,580,898
- Issue date Jan 1, 1952
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
815661
- Patent number 815,661
- Issue date Mar 20, 1906
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
692611
- Patent number 692,611
- Issue date Feb 4, 1902
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
386918
- Patent number 386,918
- Issue date Jul 31, 1888
- E03 - WATER SUPPLY SEWERAGE