Patent US3395358A successfully refreshed from Google Patents.
US3395358A
Expired / Lapsed
US
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Differential amplifier apparatus
Assignee: Honeywell Inc
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Filing: 1965-04-28
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Granted: 1968-07-30
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Expires: 1985-04-28
Abstract
No abstract record available.
Inventors
- 👤 John F Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:27
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/45; H03F3/45071; H03F3/45479; H03F3/45484; H03F3/45488; H03F3/45493; H03F3/45502; H03F2203/00; H03F2203/45; H03F2203/45408; H03F2203/45418; H03F2203/45702
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3046487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |