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US2992409A
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Transistor selection array and drive system
Assignee: Unisys Corp
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Filing: 1955-08-09
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Granted: 1961-07-11
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Expires: 1975-08-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph D Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:12
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/62; H03K17/6285; H03K17/6221
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2465355A
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US2627039A
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US2686299A
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US2734187A
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US2776419A
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US2769968A
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US2764687A
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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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |