US2501416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muting circuit for frequency modulation radio receivers
Assignee: Lanteris Space LLC
•
Filing: 1945-02-28
•
Granted: 1950-03-21
•
Expires: 1965-02-28
Abstract
No abstract record available.
Inventors
- 👤 David B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:01
CPC Classifications
H; H03; H03J; H03J3/00; H03J3/02; H03J3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2115813A
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US2160566A
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US2035176A
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US2096874A
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US2063588A
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US2147595A
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US2224224A
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US2279095A
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US2241569A
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US2296056A
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US2263633A
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US2356201A
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US2379721A
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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) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |