Robert E. Koch

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Ottawa Lake, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Pattern plates and method of making same
- Patent number 4,014,090
- Issue date Mar 29, 1977
- The Freeman Supply Company
- Gerald R. Rusk
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Guide pin and bushing assembly for flask, patterns, and the like
- Patent number 3,986,548
- Issue date Oct 19, 1976
- The Freeman Supply Company
- Gerald R. Rusk
- B22 - CASTING POWDER METALLURGY