Daniel R. Speelman

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Minneapolis, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for detachably coupling a load to a crane
- Patent number 4,936,617
- Issue date Jun 26, 1990
- John A. Dalsin & Son, Inc.
- Graydon L. Greene
- B66 - HOISTING LIFTING HAULING