Leon B. Watts

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Surrey, CA

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Patents Grantslast 30 patents

Information Patent Grant
Sewer inspection chamber with back-flow prevention valve and method...
- Patent number 6,125,878
- Issue date Oct 3, 2000
- Le-Ron Plastics Inc.
- Leon B. Watts
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Sewer inspection chamber with back-flow prevention valve
- Patent number 6,029,684
- Issue date Feb 29, 2000
- Le-Ron Plastics Inc.
- Leon B. Watts
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Sewer inspection chamber with back-flow prevention valve and method...
- Patent number 5,826,609
- Issue date Oct 27, 1998
- Le-Ron Plastics Inc.
- Leon B. Watts
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Temperature controlled grease trap
- Patent number 5,409,615
- Issue date Apr 25, 1995
- Le-Ron Plastics, Inc.
- Lloyd Wallman
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL