John E. Emberson

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Markham, CA

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Patents Grantslast 30 patents

Information Patent Grant
Drain suited for installation in wooden floors
- Patent number 4,943,100
- Issue date Jul 24, 1990
- Enpoco Limited
- John E. Emberson
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Drainage element
- Patent number 4,832,375
- Issue date May 23, 1989
- Enpoco Limited
- John E. Emberson
- E03 - WATER SUPPLY SEWERAGE