Althoff; Arnold G.

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Wahpeton, ND, US

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Patents Grantslast 30 patents

Information Patent Grant
Continuous flow process of mold-making or die-making using a reusab...
- Patent number 5,569,419
- Issue date Oct 29, 1996
- Brenot; Stephen E.
- Stephen E. Brenot
- B28 - WORKING CEMENT, CLAY, OR STONE