Patent US1637951A successfully refreshed from Google Patents.
Patent US2064582A successfully refreshed from Google Patents.
US2064582A
Expired / Lapsed
US
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Radio apparatus
Assignee: RCA Corp
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Filing: 1934-10-31
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Granted: 1936-12-15
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Expires: 1954-10-31
Abstract
No abstract record available.
Inventors
- 👤 Wolff Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:16
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) | 1939-12-15 | 1940-06-15 | 1940-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-12-15 | 1944-06-15 | 1944-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-12-15 | 1948-06-15 | 1948-12-15 | $7700.00 | Window Closed / Lapsed |