US2882423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring circuit
Assignee: International Business Machines Corp
•
Filing: 1954-09-30
•
Granted: 1959-04-14
•
Expires: 1974-09-30
Abstract
No abstract record available.
Inventors
- 👤 Olin L Macsorley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:34
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2536916A
Cited
US2569345A
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US2580771A
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US2591961A
Cited
US2785304A
Cited
US2673936A
Cited
US2734684A
Cited
US2722630A
Cited
US2665845A
Cited
US2771551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |