John H. Nairn

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Longmont, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Programmable calculator
- Patent number 4,437,156
- Issue date Mar 13, 1984
- Hewlett-Packard Company
- Chris J. Christopher
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Programmable calculator
- Patent number 4,075,679
- Issue date Feb 21, 1978
- Hewlett-Packard Company
- Chris J. Christopher
- G06 - COMPUTING CALCULATING COUNTING