Patent US2941044A successfully refreshed from Google Patents.
US2941044A
Expired / Lapsed
US
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Controlled sound reproduction
Assignee: RCA Corp
•
Filing: 1954-04-23
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Granted: 1960-06-14
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Expires: 1974-04-23
Abstract
No abstract record available.
Inventors
- 👤 John E Volkmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:18
CPC Classifications
G; G10; G10K; G10K15/00; G10K15/08; G10K15/10; Y; Y10; Y10S; Y10S84/00; Y10S84/26; Y10S84/27
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1901033A
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GB342284A
Cited
US2101121A
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US1950690A
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US2008712A
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US2298618A
Cited
US2709204A
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US2673248A
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US2778874A
Cited
US2714633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |