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US3466512A
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Impact avalanche transit time diodes with heterojunction structure
Assignee: AT&T Inc
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Filing: 1967-05-29
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Granted: 1969-09-09
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Expires: 1987-05-29
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Seidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:32
CPC Classifications
H; H10; H10D; H10D8/00; H10D8/40; Y; Y10; Y10S; Y10S148/00; Y10S148/072
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) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |