US2852254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recorder
Assignee: RCA Corp
•
Filing: 1954-12-16
•
Granted: 1958-09-16
•
Expires: 1974-12-16
Abstract
No abstract record available.
Inventors
- 👤 Hillel I Reiskind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:40
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2167817A
Cited
US2203032A
Cited
US2327108A
Cited
US2363403A
Cited
US2349122A
Cited
US2656184A
Cited
US2701718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |