Patent US2142648A successfully refreshed from Google Patents.
US2142648A
Expired / Lapsed
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Radio apparatus
Assignee: RCA Corp
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Filing: 1936-06-09
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Granted: 1939-01-03
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Expires: 1956-06-09
Abstract
No abstract record available.
Inventors
- 👤 Ernest G Linder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:01
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/48; F16H15/50; C; C03; C03C; C03C23/00; C03C3/00; H; H01; H01Q; H01Q15/00; H01Q15/02; H01Q3/00; H01Q3/44; H03; H03C; H03C7/00; H03C7/02; H03L; H03L7/00; H03L7/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-01-02 | 1942-07-04 | 1943-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-01-02 | 1946-07-04 | 1947-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-01-02 | 1950-07-04 | 1951-01-03 | $7700.00 | Window Closed / Lapsed |