US3371286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized direct-coupled push-pull amplifier
Assignee: RTX Corp
•
Filing: 1964-08-27
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Granted: 1968-02-27
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Expires: 1984-08-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Lovelace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:17
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/26; H03F3/45; H03F3/45071; H03F3/45479; H03F2203/00; H03F2203/45; H03F2203/45008; H03F2203/45051; H03F2203/45072; H03F2203/45074; H03F2203/45076; H03F2203/45134; H03F2203/45202; H03F2203/45212
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2543819A
Cited
US2918630A
Cited
US2761917A
Cited
GB884365A
Cited
US2994832A
Cited
US3206685A
Cited
US3262066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |