US3397326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bipolar transistor with field effect biasing means
Assignee: Westinghouse Electric Corp
•
Filing: 1965-03-30
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Granted: 1968-08-13
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Expires: 1985-03-30
Abstract
No abstract record available.
Inventors
- 👤 Robert C Gallagher
- 👤 Robert P Donovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:22
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/34; H03F3/343; H03F3/347; H10; H10D; H10D84/00; H10D84/40; H10D84/401; H10D84/403; H10D84/406; H10D84/60; H10D84/611; H10D84/613; H10D84/617; H10D99/00; Y; Y10; Y10S; Y10S148/00; Y10S148/037; Y10S148/098; Y10S148/151
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3204160A
Cited
US3244949A
Cited
US3243669A
Cited
US3271640A
Cited
US3356858A
Cited
US3274400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |