Patent US2882424A successfully refreshed from Google Patents.
US2882424A
Expired / Lapsed
US
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Ring circuit
Assignee: International Business Machines Corp
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Filing: 1954-09-30
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Granted: 1959-04-14
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Expires: 1974-09-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Wohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:13
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/002; F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2247; F16H25/2266; G; G21; G21C; G21C7/00; G21C7/06; G21C7/08; G21C7/12; G21C7/14; H02; H02K; H02K7/00; H02K7/06; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18664
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2773983A
Cited
US2580771A
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US2644887A
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US2785304A
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US2808203A
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US2700750A
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US2673936A
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 |