US3366858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push-pull amplifier stage having a.c. power supply and bias
Assignee: Leeds and Northrup Co
•
Filing: 1964-05-25
•
Granted: 1968-01-30
•
Expires: 1984-05-25
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:22
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/30; H03F3/3083; H03F3/3086; H03F3/3098
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2651014A
Cited
US2945996A
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US3067337A
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US3023368A
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US3102983A
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US3201672A
Cited
US3168691A
Cited
US3308307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |