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Patent US2438944A successfully refreshed from Google Patents.
US2438944A
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Crystal contacts of which one element is silicon
Assignee: The General Electric Company PLC
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Filing: 1944-02-24
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Granted: 1948-04-06
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Expires: 1964-02-24
Abstract
No abstract record available.
Inventors
- 👤 Ransley Charles Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:18
CPC Classifications
H; H10; H10P; H10P95/00; H10D; H10D64/00; H10D64/20; H10D64/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1990277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-06 | 1951-10-06 | 1952-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-06 | 1955-10-06 | 1956-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-06 | 1959-10-06 | 1960-04-06 | $7700.00 | Window Closed / Lapsed |