Patent US3020401A successfully refreshed from Google Patents.
US3020401A
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US
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High frequency receiver with resonant cavity
Assignee: RS ELECTRONICS CORP
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Filing: 1960-01-11
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Granted: 1962-02-06
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Expires: 1980-01-11
Abstract
No abstract record available.
Inventors
- 👤 John G Isabeau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:45
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/10; H04B1/12; H03; H03D; H03D7/00; H03D7/18; H03D9/00; H03D9/06; H03D9/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |