US2835802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear frequency modulation detector
Assignee: Individual
•
Filing: 1953-10-12
•
Granted: 1958-05-20
•
Expires: 1973-10-12
Abstract
No abstract record available.
Inventors
- 👤 James R Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:54
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/08; H03D3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1613626A
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US2230212A
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US2111737A
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US2087429A
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US2302834A
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US2520419A
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US2519836A
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US2634369A
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US2523043A
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US2499742A
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US2496063A
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US2743361A
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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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |