US2591052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reel
Assignee: IIT Research Institute
•
Filing: 1946-02-01
•
Granted: 1952-04-01
•
Expires: 1966-02-01
Abstract
No abstract record available.
Inventors
- 👤 Camras Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:27
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1567119A
Cited
US729095A
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US947148A
Cited
US1245755A
Cited
US1515960A
Cited
US1560721A
Cited
US1882718A
Cited
US2168675A
Cited
US2515190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |