Dan Shaffer

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Duncansville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Assembly connectable to an operating arm of a machine for performin...
- Patent number 6,163,988
- Issue date Dec 26, 2000
- Rockland, Inc.
- Samuel S. Pratt
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Implement coupling assembly for excavator machines and the like
- Patent number 5,621,987
- Issue date Apr 22, 1997
- Rockland, Inc.
- Samuel S. Pratt
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Detachable coupler assembly
- Patent number 5,618,157
- Issue date Apr 8, 1997
- Rockland, Inc.
- Samuel S. Pratt
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Assembly for coupling an implement to an operating arm of a machine...
- Patent number 5,611,158
- Issue date Mar 18, 1997
- Rockland, Inc.
- Samuel S. Pratt
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Coupler assembly
- Patent number 5,575,093
- Issue date Nov 19, 1996
- Rockland, Inc.
- Samuel S. Pratt
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING