US3030585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency-modulation detector circuit
Assignee: RCA Corp
•
Filing: 1957-05-09
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Granted: 1962-04-17
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Expires: 1977-05-09
Abstract
No abstract record available.
Inventors
- 👤 Meth Irving Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:15
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1291527A
Cited
US1867567A
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US1938657A
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US1922290A
Cited
US2050963A
Cited
US2494795A
Cited
US2497290A
Cited
US2816220A
Cited
US2913579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |