US2748041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor devices and their manufacture
Assignee: RCA Corp
•
Filing: 1952-08-30
•
Granted: 1956-05-29
•
Expires: 1972-08-30
Abstract
No abstract record available.
Inventors
- 👤 Humboldt W Leverenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/30; H10D48/32; H10D48/34; C; C23; C23F; C23F1/00; C23F1/02; H10D10/00; H10D62/00; H10D62/10; H10D84/00; H10D84/60; H10D84/645; H10D99/00; H10P; H10P54/00; H10P95/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2402661A
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US2673948A
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US2595497A
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US2629672A
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US2612567A
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US2561411A
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US2603693A
Cited
US2655625A
Cited
US2667607A
Cited
US2663806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |