Frederick M. Hewitt

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San Bernardino, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for extruding reinforced concrete
- Patent number 4,067,676
- Issue date Jan 10, 1978
- Frederick M. Hewitt
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Apparatus for extruding concrete
- Patent number 3,994,639
- Issue date Nov 30, 1976
- Frederick M. Hewitt
- B28 - WORKING CEMENT, CLAY, OR STONE