Keith W. Lipford

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Pasadena, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Auger dredge specially adapted to removal of toxic sediment
- Patent number 5,146,699
- Issue date Sep 15, 1992
- Ellicott Machine Corporation
- Keith W. Lipford
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Auger type dredging head
- Patent number 5,060,404
- Issue date Oct 29, 1991
- Ellicott Machine Corporation
- Keith W. Lipford
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING