Patent US3408574A successfully refreshed from Google Patents.
US3408574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable radar warning receiver
Assignee: Maxson Electronics Corp
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Filing: 1964-04-13
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Granted: 1968-10-29
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Charles J Schmidt
- 👤 Oliver G Currlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:49
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/88; G01S13/91; G01S13/92; G01S1/00; G01S1/02; G01S11/00; G01S11/02; G01S11/06; G01S7/00; G01S7/02; G01S7/021; G01S7/28; G01S7/285; G01S7/34
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) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |