Patent US2703387A successfully refreshed from Google Patents.
US2703387A
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Frequency modulation
Assignee: RCA Corp
•
Filing: 1950-11-07
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Granted: 1955-03-01
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Expires: 1970-11-07
Abstract
No abstract record available.
Inventors
- 👤 Oscar B Dutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:08
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1472583A
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US2018318A
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US2043242A
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US2298436A
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US2316927A
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US2382198A
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US2424246A
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US2438392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |