William M. Dugan

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Memphis, TN, US

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic elevator having microprocessor-based, distributed control...
- Patent number 4,787,481
- Issue date Nov 29, 1988
- Delaware Capital Formation, Inc.
- Dennis J. Farrar
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Constant velocity driving means
- Patent number 4,146,922
- Issue date Mar 27, 1979
- NCR Corporation
- Barbara A. Brown
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS