Gary R. Polk

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Champaign, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Non-reversible sliding gate, valve and method
- Patent number 5,174,908
- Issue date Dec 29, 1992
- Flo-Con Systems, Inc.
- Patrick D. King
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Sliding gate valve method and replaceable retractories
- Patent number 5,052,598
- Issue date Oct 1, 1991
- Flo-Con Systems, Inc.
- Patrick D. King
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Valve, clamp, refractory and method
- Patent number 4,582,232
- Issue date Apr 15, 1986
- Flo-Con Systems, Inc.
- George T. Shapland
- B22 - CASTING POWDER METALLURGY