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US2880332A
Expired / Lapsed
US
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Transistor flip-flop circuit
Assignee: North American Aviation Corp
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Filing: 1955-06-16
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Granted: 1959-03-31
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Expires: 1975-06-16
Abstract
No abstract record available.
Inventors
- 👤 Cravens L Wanlass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:52
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2335265A
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US2466705A
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US2500536A
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US2531600A
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US2576026A
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US2750500A
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US2663800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |