Patent US3105671A successfully refreshed from Google Patents.
US2995665A
Expired / Lapsed
US
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Transistors and circuits therefor
Assignee: International Business Machines Corp
•
Filing: 1955-05-20
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Granted: 1961-08-08
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Expires: 1975-05-20
Abstract
No abstract record available.
Inventors
- 👤 Richard F Rutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:28
CPC Classifications
H; H10; H10D; H10D88/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2597028A
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US2801348A
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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) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |