Patent US2412318A successfully refreshed from Google Patents.
US2412318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety drive, braking, and control mechanism for magnetic recording devices
Assignee: IIT Research Institute
•
Filing: 1942-08-10
•
Granted: 1946-12-10
•
Expires: 1962-08-10
Abstract
No abstract record available.
Inventors
- 👤 Camras Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:56
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/22; G11B15/02; G11B15/10; G11B15/46; G11B15/48
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-12-09 | 1950-06-10 | 1950-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-12-09 | 1954-06-10 | 1954-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-12-09 | 1958-06-10 | 1958-12-10 | $7700.00 | Window Closed / Lapsed |