James B. Druffel

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Oakland, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Fastening device for fixing a body to a structural member
- Patent number 4,577,824
- Issue date Mar 25, 1986
- Prescolite, Inc.
- James B. Druffel
- G02 - OPTICS
Information Patent Grant
Recessed lighting housing
- Patent number 4,566,057
- Issue date Jan 21, 1986
- Prescolite, Inc.
- James B. Druffel
- F21 - LIGHTING
Information Patent Grant
Hangar device for a recessed lighting unit
- Patent number 4,511,113
- Issue date Apr 16, 1985
- Prescolite, a division of U.S. Industries
- James B. Druffel
- F21 - LIGHTING
Information Patent Grant
Recessed lighting unit
- Patent number 4,471,416
- Issue date Sep 11, 1984
- Prescolite
- James B. Druffel
- F21 - LIGHTING
Information Patent Grant
Retainer for a lamp
- Patent number 4,399,497
- Issue date Aug 16, 1983
- Prescolite
- James B. Druffel
- F21 - LIGHTING
Information Patent Grant
Recessed lighting unit
- Patent number 4,388,677
- Issue date Jun 14, 1983
- Prescolite, A Div. of U.S. Industries
- James B. Druffel
- F21 - LIGHTING
Information Patent Grant
Wireway
- Patent number 4,358,635
- Issue date Nov 9, 1982
- Prescolite
- James B. Druffel
- G01 - MEASURING TESTING