Christopher B. Bunn

Follow

Person

North Vancouver, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Extrusion machine
- Patent number 4,548,565
- Issue date Oct 22, 1985
- DY-Core Systems Ireland Limited
- Christopher B. Bunn
- B28 - WORKING CEMENT, CLAY, OR STONE
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
Concrete slab surface finishing apparatus
- Patent number 4,280,800
- Issue date Jul 28, 1981
- Dyform Engineering Limited
- Christopher B. 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