Patent US2524035A successfully refreshed from Google Patents.
US2524035A
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US
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Three-electrode circuit element utilizing semiconductive materials
Assignee: AT&T Inc
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Filing: 1948-06-17
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Granted: 1950-10-03
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Expires: 1968-06-17
Abstract
No abstract record available.
Inventors
- 👤 Bardeen John
- 👤 Walter H Brattain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:28
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/181; H03F3/183; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1203; H03B5/1231; H03B5/1296; H03F3/04; H03F3/16; H03F3/165; H10; H10D; H10D99/00; H10W; H10W20/00; H10W20/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1745175A
Cited
US1900018A
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US1949383A
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GB439457A
Cited
US2173904A
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US2402662A
Cited
US2441603A
Cited
US2438893A
Cited
US2447829A
Cited
US2464807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |