Donald M. Mains

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Greendale, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Automatic leveling system for blast hole drills and the like
- Patent number 4,679,489
- Issue date Jul 14, 1987
- Becor Western Inc.
- Richard A. Jasinski
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Peak power limiter system for excavator
- Patent number 4,358,719
- Issue date Nov 9, 1982
- Bucyrus-Erie Company
- Richard G. Currier
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Transient load damping circuit for excavator
- Patent number 4,031,440
- Issue date Jun 21, 1977
- Bucyrus-Erie Company
- Edward H. Christian
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER