Robert A. Fritsch

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Cedar Rapids, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Carrier frame for mobile crane
- Patent number 4,160,558
- Issue date Jul 10, 1979
- Harnischfeger Corporation
- Robert A. Fritsch
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Control system for telescopic boom
- Patent number 4,125,974
- Issue date Nov 21, 1978
- Harnischfeger Corporation
- Christopher G. Kay
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Boom section for telescopic crane boom
- Patent number 4,112,649
- Issue date Sep 12, 1978
- Harnischfeger Corporation
- Robert A. Fritsch
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Means for storing and connecting jib for telescopic boom of mobile...
- Patent number 3,945,333
- Issue date Mar 23, 1976
- Harnischfeger Corporation
- Robert A. Fritsch
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Powered outrigger beams having stabilizing spacer pad means
- Patent number 3,945,666
- Issue date Mar 23, 1976
- Harnischfeger Corporation
- Robert A. Fritsch
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Locking means for relatively movable boom sections of boom of mobil...
- Patent number 3,944,082
- Issue date Mar 16, 1976
- Harnischfeger Corporation
- Robert A. Fritsch
- B66 - HOISTING LIFTING HAULING