David W. Halsted

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Hemlock, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Concrete mixer with plastic drum
- Patent number 5,492,401
- Issue date Feb 20, 1996
- David W. Halsted
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Mortar mixer with plastic drum having reinforced end walls
- Patent number 5,441,341
- Issue date Aug 15, 1995
- Stone Construction Equipment, Inc.
- David W. Halsted
- B28 - WORKING CEMENT, CLAY, OR STONE