US2923850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweep circuit
Assignee: International Business Machines Corp
•
Filing: 1956-03-27
•
Granted: 1960-02-02
•
Expires: 1976-03-27
Abstract
No abstract record available.
Inventors
- 👤 Maurice J Raffensperger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:21
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/10; H03K4/26; H03K4/39; H03K4/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2098052A
Cited
US2102371A
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US2364998A
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US2508879A
Cited
US2715182A
Cited
US2654855A
Cited
US2688075A
Cited
GB711170A
Cited
US2810093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |