Patent US3222064A successfully refreshed from Google Patents.
US2545652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph recorder and reproducer
Assignee: Thomas A Edison Inc
•
Filing: 1945-07-11
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Granted: 1951-03-20
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Expires: 1965-07-11
Abstract
No abstract record available.
Inventors
- 👤 Charles W Dann
- 👤 Richard M Somers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:07
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/02
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) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |