Patent DE90782C successfully refreshed from Google Patents.
US2646989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound recording and reproducing apparatus
Assignee: Individual
•
Filing: 1949-09-12
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Granted: 1953-07-28
•
Expires: 1969-09-12
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:21
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/61; G11B15/18; G11B15/26; G11B15/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1777682A
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US1996732A
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DE650072C
Cited
US2266755A
Cited
US2273391A
Cited
US2251322A
Cited
US2408320A
Cited
US2430449A
Cited
US2463411A
Cited
US2518556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |