Patent US2330568A successfully refreshed from Google Patents.
US2932748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor devices
Assignee: RCA Corp
•
Filing: 1954-07-26
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Granted: 1960-04-12
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Expires: 1974-07-26
Abstract
No abstract record available.
Inventors
- 👤 Johnson Harwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:57
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/30; H10D48/32; H10D48/34; H10D48/345; H10D10/00; H10D62/00; H10D62/80; H10D62/83; H10D62/834; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2502488A
Cited
US2570978A
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US2561411A
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US2763731A
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US2790037A
Cited
US2695930A
Cited
US2657360A
Cited
US2717342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |