Patent US2592313A successfully refreshed from Google Patents.
US2592313A
Expired / Lapsed
US
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Signal volume varying system
Assignee: RCA Corp
•
Filing: 1947-12-11
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Granted: 1952-04-08
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Expires: 1967-12-11
Abstract
No abstract record available.
Inventors
- 👤 Adolph R Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:05
CPC Classifications
H; H03; H03G; H03G7/00; H03G7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1901331A
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US1950144A
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US1967125A
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US2137435A
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US2134757A
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US2158268A
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US2229296A
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US2431824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |