Thomas J. Halpenny

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Escondido, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Monitoring and controlling quality of pen markings on plotting media
- Patent number 5,262,797
- Issue date Nov 16, 1993
- Hewlett-Packard Company
- Robert A. Boeller
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Apparatus and method for efficient plotting
- Patent number 4,853,877
- Issue date Aug 1, 1989
- Hewlett-Packard Company
- Anthony D. Parkhurst
- G06 - COMPUTING CALCULATING COUNTING