Patent record
US4334270
Securities valuation system
| Assignee | — |
|---|---|
| Filed | 1972-08-11 |
| Granted | 1982-06-08 |
| Status | expired term |
| Est. term end | 1999-06-08 |
| 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.