US2885573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor delay circuit
Assignee: International Business Machines Corp
•
Filing: 1956-09-04
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Granted: 1959-05-05
•
Expires: 1976-09-04
Abstract
No abstract record available.
Inventors
- 👤 Genung L Clapper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:05
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/13; H03K5/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2627039A
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US2636133A
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US2594449A
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US2651728A
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US2760087A
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US2644893A
Cited
US2764688A
Cited
FR1114488A
Cited
FR1119708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |