US2610857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable phonograph
Assignee: RCA Corp
•
Filing: 1946-06-20
•
Granted: 1952-09-16
•
Expires: 1966-06-20
Abstract
No abstract record available.
Inventors
- 👤 Frank E Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:46
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE343084C
Cited
US1546931A
Cited
US1683160A
Cited
US1766992A
Cited
GB245233A
Cited
US1610129A
Cited
US2246130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |