US2854624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape processor
Assignee: Underwood Corp
•
Filing: 1953-07-23
•
Granted: 1958-09-30
•
Expires: 1973-07-23
Abstract
No abstract record available.
Inventors
- 👤 Lubkin Samuel
- 👤 Edmund D Schreiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:03
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B20/00; G11B20/10; G11B20/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2540654A
Cited
US2628346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |