Heinz Proell

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Brookfield, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Device for measuring woodruff keyways and method of using
- Patent number 5,131,160
- Issue date Jul 21, 1992
- Dreier Corporation
- Heinz Proell
- G01 - MEASURING TESTING
Information Patent Grant
Device for measuring a shaft keyway and method of using
- Patent number 4,970,799
- Issue date Nov 20, 1990
- Dreier Corporation
- Heinz Proell
- G01 - MEASURING TESTING