US2790037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor signal translating devices
Assignee: AT&T Inc
•
Filing: 1952-03-14
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Granted: 1957-04-23
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Expires: 1972-03-14
Abstract
No abstract record available.
Inventors
- 👤 Shockley William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:28
CPC Classifications
H; H10; H10D; H10D30/00; H10D30/80; H03; H03F; H03F9/00; H10D10/00; H10D48/00; H10D48/30; H10D48/32; H10D48/36; H10D62/00; H10D62/10; H10D84/00; H10D84/60; H10D84/645; H10D99/00; H10W; H10W40/00; H10W40/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2524035A
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US2569347A
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US2502479A
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US2600500A
Cited
US2570978A
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US2586080A
Cited
US2561411A
Cited
US2623105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |