US2916547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording and reproducing system
Assignee: Ampex Corp
•
Filing: 1955-05-05
•
Granted: 1959-12-08
•
Expires: 1975-05-05
Abstract
No abstract record available.
Inventors
- 👤 Charles P Ginsburg
- 👤 Jr Shelby F Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:50
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1916510A
Cited
US1857451A
Cited
US2245286A
Cited
US2124415A
Cited
US2652554A
Cited
GB720334A
Cited
US2797378A
Cited
US2774927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |