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US3056888A
Expired / Lapsed
US
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Semiconductor triode
Assignee: AT&T Inc
•
Filing: 1960-08-17
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Granted: 1962-10-02
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Expires: 1980-08-17
Abstract
No abstract record available.
Inventors
- 👤 Martin M Atalla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:59
CPC Classifications
H; H10; H10D; H10D30/00; H10D30/60; H10D10/00; H10D12/00; H10D30/67; H10D48/00; H10D48/30; H10D48/32; H10D48/36; H10D84/00; H10D84/80; H10D84/82; H10D84/83; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2617865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |