David W. Berg

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Minneapolis, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Seal assembly
- Patent number 4,121,840
- Issue date Oct 24, 1978
- Tol-O-Matic Inc.
- David W. Berg
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Seal assembly
- Patent number 4,057,257
- Issue date Nov 8, 1977
- Tol-O-Matic, Inc.
- David W. Berg
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Wheel brake assembly
- Patent number 4,053,036
- Issue date Oct 11, 1977
- Tol-O-Matic, Inc.
- William C. Branham
- B60 - VEHICLES IN GENERAL