US3523282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calculator
Assignee: Friden Inc
•
Filing: 1964-09-24
•
Granted: 1970-08-04
•
Expires: 1984-09-24
Abstract
No abstract record available.
Inventors
- 👤 Robert A Ragen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:52
CPC Classifications
G; G06; G06F; G06F15/00; G06F15/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2800277A
Cited
US2947478A
Cited
US3026036A
Cited
US3016194A
Cited
US3019976A
Cited
US3064895A
Cited
US3043509A
Cited
US3161856A
Cited
US3161855A
Cited
US3161857A
Cited
US3330946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |