US2623105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor translating device having controlled gain
Assignee: AT&T Inc
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Filing: 1951-09-21
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Granted: 1952-12-23
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Expires: 1971-09-21
Abstract
No abstract record available.
Inventors
- 👤 Shockley William
- 👤 Sparks Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:22
CPC Classifications
H; H10; H10D; H10D18/00; G; G01; G01K; G01K7/00; G01K7/16; G01K7/22; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; H03; H03F; H03F99/00; H10D10/00; H10D48/00; H10D48/30; H10D48/32; H10D48/34; H10D48/345; H10D62/00; H10D62/10; H10D62/60; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2570978A
Cited
US2586080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |