US3501710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Class b transistor amplifier biassing circuit
Assignee: BAE Systems Electronics Ltd
•
Filing: 1968-02-19
•
Granted: 1970-03-17
•
Expires: 1988-02-19
Abstract
No abstract record available.
Inventors
- 👤 Valdis Liepins
- 👤 Gian Franco Tonion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:58
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/26; H03F1/02; H03F1/0205; H03F1/0261; H03F3/00; H03F3/20; H03F3/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3374442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |