US2614760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for magnetic recorders
Assignee: IIT Research Institute
•
Filing: 1945-06-29
•
Granted: 1952-10-21
•
Expires: 1965-06-29
Abstract
No abstract record available.
Inventors
- 👤 Marion S Danisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:40
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/44; G11B15/02; G11B15/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US771861A
Cited
US737998A
Cited
US909414A
Cited
US947148A
Cited
US1540121A
Cited
US1393500A
Cited
GB297327A
Cited
US1939181A
Cited
US1789607A
Cited
US1886856A
Cited
US2351005A
Cited
US2412318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |