Patent US5250059A successfully refreshed from Google Patents.
US2992340A
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Amplitude discriminating system
Assignee: Raytheon Co
•
Filing: 1956-12-21
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Granted: 1961-07-11
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Expires: 1976-12-21
Abstract
No abstract record available.
Inventors
- 👤 George W Floyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:29
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/22; H03K9/00; H03K9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2622212A
Cited
US2789267A
Cited
US2762464A
Cited
US2880330A
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US2843761A
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US2809339A
Cited
US2776382A
Cited
US2866104A
Cited
US2850649A
Cited
US2845548A
Cited
US2814736A
Cited
US2850236A
Cited
US2833938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |