Patent record
US3946218
General purpose calculator with capability for performing yield-to-maturity of a bond calculation
| Assignee | Hewlett-Packard Company, L.P. |
|---|---|
| Filed | 1974-10-10 |
| Granted | 1976-03-23 |
| Status | expired term |
| Est. term end | 1994-10-10 |
| Fee lapse date | — |
| CPC codes | G06Q40/06 |
Dates here are estimates from patent-term math (20 years from filing, or the older 17-from-grant/20-from-filing rule for pre-1995 filings), not a legal determination. They ignore patent-term adjustments, extensions, and terminal disclaimers, and don't reflect maintenance-fee lapses that haven't happened yet. This is not legal advice.