Norman W. Bunn

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West Vancouver, CA

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Patents Grantslast 30 patents

Information Patent Grant
Forming concrete support chairs
- Patent number 4,383,810
- Issue date May 17, 1983
- Norman W. Bunn
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Reinforcing member support in concrete extruders
- Patent number 4,273,522
- Issue date Jun 16, 1981
- Dyform Engineering Limited
- Norman W. Bunn
- B28 - WORKING CEMENT, CLAY, OR STONE