John A. D. B. Durham

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London, GB

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Patents Grantslast 30 patents

Information Patent Grant
Cutting of hollow core slabs
- Patent number 5,529,735
- Issue date Jun 25, 1996
- Hollow Core Systems (Mid-East) Limited
- John A. D. B. Durham
- B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents

Information Patent Application
HOLLOWCORE SLABS
- Publication number 20130047530
- Publication date Feb 28, 2013
- JOHN ANTHONY BRUCE DOUGLAS DURHAM
- E04 - BUILDING