Christopher N. Wallis

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Winchester, GB

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Patents Grantslast 30 patents

Information Patent Grant
Actuator arm controller for a storage device
- Patent number 5,268,804
- Issue date Dec 7, 1993
- International Business Machines Corporation
- Christopher N. Wallis
- G11 - INFORMATION STORAGE
Information Patent Grant
Asynchronous serial data receiver with capability for sampling the...
- Patent number 5,155,486
- Issue date Oct 13, 1992
- International Business Machines Corporation
- Philip J. Murfet
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Serial data receiver with phase shift detection
- Patent number 5,003,308
- Issue date Mar 26, 1991
- International Business Machines Corporation
- Stephen Furniss
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Track following servo system for a disk file
- Patent number 4,594,622
- Issue date Jun 10, 1986
- International Business Machines Corporation
- Christopher N. Wallis
- G11 - INFORMATION STORAGE
Information Patent Grant
Sampled servo position control system
- Patent number 4,412,165
- Issue date Oct 25, 1983
- International Business Machines Corporation
- William J. Case
- G11 - INFORMATION STORAGE
Information Patent Grant
Electromagnetic actuator
- Patent number 4,145,725
- Issue date Mar 20, 1979
- International Business Machines Corporation
- Christopher N. Wallis
- G11 - INFORMATION STORAGE