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Patent US2772410A successfully refreshed from Google Patents.
US2772410A
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Transistor indicator circuit
Assignee: International Business Machines Corp
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Filing: 1954-09-30
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Granted: 1956-11-27
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Expires: 1974-09-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Logue
- 👤 Robert A Henle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:02
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/18; H01; H01J; H01J13/00; H01J13/02; H01J13/48; H01J2893/00; H01J2893/0048; H01J2893/0058; Y; Y10; Y10S; Y10S74/00; Y10S74/06; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18184
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |