US2617893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously playing phonograph
Assignee: RCA Corp
•
Filing: 1950-04-29
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Granted: 1952-11-11
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Expires: 1970-04-29
Abstract
No abstract record available.
Inventors
- 👤 Chester M Sinnett
- 👤 Belar Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:33
CPC Classifications
G; G11; G11B; G11B17/00; G10; G10H; G10H1/00; G10H1/0091; G11B27/00; G11B27/10; G11B27/102; G11B27/105; G10H2210/00; G10H2210/155; G10H2210/195; G10H2210/241; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2537; G11B2220/2545
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |