US2462263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reproduction of sound
Assignee: RCA Corp
•
Filing: 1945-02-02
•
Granted: 1949-02-22
•
Expires: 1965-02-02
Abstract
No abstract record available.
Inventors
- 👤 Harold E Haynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:06
CPC Classifications
G; G06; G06E; G06E1/00; G11; G11B; G11B7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2017901A
Cited
AU810832A
Cited
US1974900A
Cited
GB434936A
Cited
US2121211A
Cited
US2277502A
Cited
US2347084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-22 | 1952-08-23 | 1953-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-22 | 1956-08-23 | 1957-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-22 | 1960-08-23 | 1961-02-22 | $7700.00 | Window Closed / Lapsed |