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US3377588A
Expired / Lapsed
US
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Solid-state, frequency-selective amplifying device
Assignee: CIE FRANCAISE THOMSON HOTCHKIS
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Filing: 1966-12-07
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Granted: 1968-04-09
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Expires: 1986-12-07
Abstract
No abstract record available.
Inventors
- 👤 Picquendar Jean Edgar
- 👤 Cahen Olivier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:17
CPC Classifications
H; H03; H03F; H03F13/00; G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/64; G02; G02F; G02F1/00; H10; H10F; H10F99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3173100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |