John O. Beynon

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Waterloo, CA

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Patents Grantslast 30 patents

Information Patent Grant
Controlled expansion suspended ceiling grid beam
- Patent number 4,128,978
- Issue date Dec 12, 1978
- Ceiling & Drywall Products Limited
- John O. Beynon
- E04 - BUILDING
Information Patent Grant
Controlled expansion suspended ceiling grid member
- Patent number 4,016,701
- Issue date Apr 12, 1977
- Ceiling and Drywall Products Limited
- John O. Beynon
- E04 - BUILDING