David B. Hallen

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Rutland, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Winch hoist pull pin handle
- Patent number 10,173,871
- Issue date Jan 8, 2019
- Lincoln Precision Machining Company
- David B. Hallen
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Overload warning system for a winch hoist
- Patent number 8,424,846
- Issue date Apr 23, 2013
- Lincoln Precision Machining Company
- Richard A. Perduta
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
Winch Hoist Pull Pin Handle
- Publication number 20170152127
- Publication date Jun 1, 2017
- Lincoln Precision Machining Company
- David B. Hallen
- B66 - HOISTING LIFTING HAULING