Bottom boards or mould boards

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Patents Grantslast 30 patents

Information Patent Grant
Pattern device for foundry molds
- Patent number 4,199,020
- Issue date Apr 22, 1980
- Erwin Buhrer
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
1894511
- Patent number 1,894,511
- Issue date Jan 17, 1933
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
1658456
- Patent number 1,658,456
- Issue date Feb 7, 1928
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
1522744
- Patent number 1,522,744
- Issue date Jan 13, 1925
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
1478495
- Patent number 1,478,495
- Issue date Dec 25, 1923
- B22 - CASTING POWDER METALLURGY