US2977465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency-scanning radio receivers
Assignee: Raytheon Co
•
Filing: 1956-12-24
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Granted: 1961-03-28
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Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Royden C Sanders
- 👤 William R Mercer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:09
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/20; H03J7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB528061A
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US2283523A
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US2647994A
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US2486551A
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US2516856A
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US2594263A
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US2639372A
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US2639373A
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GB674185A
Cited
US2730712A
Cited
US2853601A
Cited
US2809289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |