Patent US2515225A successfully refreshed from Google Patents.
US2515225A
Expired / Lapsed
US
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Transceiver having switch controlled frequency compensator
Assignee: RCA Corp
•
Filing: 1944-12-30
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Granted: 1950-07-18
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Expires: 1964-12-30
Abstract
No abstract record available.
Inventors
- 👤 Paul F G Holst
- 👤 Loren R Kirkwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:56
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2018569A
Cited
GB453733A
Cited
GB470366A
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GB512121A
Cited
US2259690A
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GB550774A
Cited
US2284405A
Cited
US2417542A
Cited
US2416794A
Cited
US2415242A
Cited
US2425495A
Cited
US2452601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |