US3434069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential amplifier having a feedback path including a differential current generator
Assignee: Boeing North American Inc
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Filing: 1967-04-27
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Granted: 1969-03-18
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Expires: 1987-04-27
Abstract
No abstract record available.
Inventors
- 👤 Robert L Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:35
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/45; H03F3/45071; H03F3/45076; H03F3/45179; H03F3/45197; G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/11; H03F1/00; H03F1/08; H03F1/30; H03F1/307; H03F1/42; H03F1/48; H03F3/4508; H03F3/45098; H03F3/45479; H03F3/45484; H03F3/45596; H03F3/456; H03F3/45618; H03F2203/00; H03F2203/45; H03F2203/45144; H03F2203/45466; H03F2203/45471; H03F2203/45511; H03F2203/45594; H03F2203/45612; H03F2203/45636; H03F2203/45652; H03F2203/45702; H03F2203/45716
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3346817A
Cited
US3280347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |