US3535599A
Expired / Lapsed
US
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Field effect semiconductor device with multiple channel regions selectively switched from conducting to nonconducting
Assignee: DAVID G DEAK
•
Filing: 1969-06-11
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Granted: 1970-10-20
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Expires: 1989-06-11
Abstract
No abstract record available.
Inventors
- 👤 David G Deak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:03
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/80; H10D84/87; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |