US2833475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic record and recordcontrolled mechanism
Assignee: Unisys Corp
•
Filing: 1951-09-06
•
Granted: 1958-05-06
•
Expires: 1971-09-06
Abstract
No abstract record available.
Inventors
- 👤 Frank G Dedek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:26
CPC Classifications
G; G06; G06K; G06K1/00; G06K1/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1514503A
Cited
US2026329A
Cited
US2308927A
Cited
US2209106A
Cited
US2346250A
Cited
US2337553A
Cited
US2427383A
Cited
US2302002A
Cited
US2436829A
Cited
US2600817A
Cited
USRE23385E
Cited
US2547838A
Cited
US2584318A
Cited
US2692083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |