US3035186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor switching apparatus
Assignee: AT&T Inc
•
Filing: 1959-06-15
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Granted: 1962-05-15
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Expires: 1979-06-15
Abstract
No abstract record available.
Inventors
- 👤 Edward I Doucette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:19
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/80; H10D84/87; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/094; Y; Y10; Y10S; Y10S148/00; Y10S148/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2648805A
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FR1037293A
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US2744970A
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US2754431A
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US2836797A
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US2851615A
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US2901638A
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US2801348A
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US2864006A
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US2900531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |