Patent US4735605A successfully refreshed from Google Patents.
US2569347A
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Circuit element utilizing semiconductive material
Assignee: AT&T Inc
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Filing: 1948-06-26
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Granted: 1951-09-25
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Expires: 1968-06-26
Abstract
No abstract record available.
Inventors
- 👤 Shockley William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:30
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/35; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1206; H03B5/1231; H03B5/1237; H03B5/124; H03B5/1256; H03B5/1296; H03C; H03C1/00; H03C1/36; H03D; H03D7/00; H03D7/12; H03F; H03F3/00; H03F3/04; H03F3/14; H10; H10D; H10D62/00; H10D62/10; H10D62/13; H10D62/133; H10D99/00; H10P; H10P95/00; H10P95/50
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |