Patent US373849A successfully refreshed from Google Patents.
Patent US3368637A successfully refreshed from Google Patents.
US3368637A
Expired / Lapsed
US
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Quadrature component detector and suppressor
Assignee: Fairbanks Morse Inc
•
Filing: 1965-12-01
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Granted: 1968-02-13
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Expires: 1985-12-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph G Green
- 👤 Ortiz-Muniz Roberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:25
CPC Classifications
G; G01; G01G; G01G3/00; G01G3/12; G01G3/14; G01G3/142; G01G3/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1708544A
Cited
US2554987A
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US2947875A
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US3109939A
Cited
US3039004A
Cited
US3231745A
Cited
US3247387A
Cited
US3248549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |