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Patent US2935626A successfully refreshed from Google Patents.
US2935626A
Expired / Lapsed
US
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Transistor switching circuit
Assignee: International Business Machines Corp
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Filing: 1957-02-25
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Granted: 1960-05-03
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Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 Olin L Macsorley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:25
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/01; H03K19/013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB755797A
Cited
US2703368A
Cited
FR1119708A
Cited
FR1116599A
Cited
US2828450A
Cited
US2825822A
Cited
US2814736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |