US3174057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bistable multivibrator employing single four zone semiconductor element
Assignee: Tung Sol Electric Inc
•
Filing: 1961-09-18
•
Granted: 1965-03-16
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Expires: 1981-09-18
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Cake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:09
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/35; H03K3/352
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2997604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |