Joseph H. Hoffman

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Norwood, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Double-walled centrifugal fan scroll and system of operation
- Patent number 4,526,510
- Issue date Jul 2, 1985
- Joseph H. Hoffman
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Centrifugal fan, shaft, plate and hub assembly
- Patent number 4,173,429
- Issue date Nov 6, 1979
- Westinghouse Electric Corp.
- Joseph H. Hoffman
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES