US3427708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor
Assignee: Telefunken Patentverwertungs GmbH
•
Filing: 1965-04-21
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Granted: 1969-02-18
•
Expires: 1985-04-21
Abstract
No abstract record available.
Inventors
- 👤 Hans-Jurgen Schutze
- 👤 Klaus Hennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:58
CPC Classifications
H; H10; H10P; H10P54/00; H10W; H10W20/00; H10W20/40; Y; Y10; Y10S; Y10S148/00; Y10S148/028; Y10S148/051; Y10S148/085; Y10S148/135; Y10S438/00; Y10S438/977
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2748041A
Cited
US2967344A
Cited
US3046176A
Cited
US3042565A
Cited
US2981877A
Cited
US3135638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |