Adolf P. E. Volkmann

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Portland, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Mold box for forming sand pouring basins
- Patent number 5,476,135
- Issue date Dec 19, 1995
- Adolf P. E. Volkmann
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Anti-shift assembly for mold matchboards
- Patent number 4,871,009
- Issue date Oct 3, 1989
- Adolf P. E. Volkmann
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Anti-shift insert structure for matching components
- Patent number 4,794,975
- Issue date Jan 3, 1989
- Adolf P. E. Volkmann
- B22 - CASTING POWDER METALLURGY