Patent US2477547A successfully refreshed from Google Patents.
US2477547A
Expired / Lapsed
US
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Modulation of radio-frequency oscillations
Assignee: Bendix Aviation Corp
•
Filing: 1945-01-03
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Granted: 1949-07-26
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Expires: 1965-01-03
Abstract
No abstract record available.
Inventors
- 👤 Theodore K Riggen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:39
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB314089A
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US1917995A
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GB366053A
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GB370967A
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US2015523A
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US2149432A
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US2176526A
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US2257795A
Cited
US2374666A
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GB557563A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |