US2877958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic sound recorder-reproducer
Assignee: Revere Camera Co
•
Filing: 1952-06-16
•
Granted: 1959-03-17
•
Expires: 1972-06-16
Abstract
No abstract record available.
Inventors
- 👤 Robert L Moore
- 👤 Pastor Sheldon Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:08
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/44; G11B15/442; G11B15/26; G11B15/32; G11B15/43
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |