Historical Document · 1975
US Patent 3,863,060: General Purpose Calculator with Capability for Performing Interdisciplinary Business Calculations (Hewlett-Packard, HP-80)
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The HP-80 patent: filed 30 October 1972, granted 28 January 1975; TVM keys, bonds, depreciation, dates, statistics.
- Author
- France Rodé, William L. Crowley Jr., Alexander D. R. Walker, David S. Cochran
- Year
- 1975
- Type
- Historical Document
- Credit
- US Patent and Trademark Office; via Google Patents.
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US Patent 3,863,060: General Purpose Calculator with Capability for Performing Interdisciplinary Business Calculations (Hewlett-Packard, HP-80)