US3173069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High gain transistor
Assignee: Westinghouse Electric Corp
•
Filing: 1961-02-15
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Granted: 1965-03-09
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Expires: 1981-02-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas G Stehney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:39
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/60; H10D84/641; H10D84/642; H10D84/611; H10D84/613; H10D84/615; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2663806A
Cited
FR1212682A
Cited
US3046405A
Cited
US3029366A
Cited
US2981877A
Cited
US2985804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |