US2940065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record controlled recording apparatus
Assignee: Individual
•
Filing: 1952-06-24
•
Granted: 1960-06-07
•
Expires: 1972-06-24
Abstract
No abstract record available.
Inventors
- 👤 Formby John Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:01
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/22; G06F7/24; G06F3/00; G06F3/01; G06F3/02; G06F3/023; G06F3/0232
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2431739A
Cited
US2617704A
Cited
US2597866A
Cited
US2594731A
Cited
US2614169A
Cited
US2679638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |