US2658398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic sound-recording and reproducing machine
Assignee: RCA Corp
•
Filing: 1948-06-29
•
Granted: 1953-11-10
•
Expires: 1968-06-29
Abstract
No abstract record available.
Inventors
- 👤 Earl E Masterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:04
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/02; G11B15/04; G11B15/28; G11B15/295; G11B15/43; G11B15/44; G11B15/442; G11B15/46; G11B15/60; G11B5/00; G11B5/48; G11B5/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1495993A
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US1556688A
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US2096231A
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US2222462A
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US2398879A
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US2422143A
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US2419476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |