Earl H. Sigman

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Alliance, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Positive grip lifting mechanism
- Patent number 4,360,110
- Issue date Nov 23, 1982
- AMCA International Corporation
- Earl H. Sigman
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Apparatus for stripping ingots from molds
- Patent number 4,291,746
- Issue date Sep 29, 1981
- AMCA International Corporation
- Earl H. Sigman
- B22 - CASTING POWDER METALLURGY