Donald F. Gray

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Phoenix, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Pressure sensitive pointing device for transmitting signals to a ta...
- Patent number 5,571,997
- Issue date Nov 5, 1996
- Kurta Corporation
- Donald F. Gray
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Position resolving system
- Patent number 5,225,637
- Issue date Jul 6, 1993
- Kurta Corporation
- James L. Rodgers
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Low power cordless magnetic field digitizer with differential grid...
- Patent number 5,218,174
- Issue date Jun 8, 1993
- Kurta Corporation
- Donald F. Gray
- G06 - COMPUTING CALCULATING COUNTING