US2966598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superconductor circuits
Assignee: International Business Machines Corp
•
Filing: 1957-12-23
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Granted: 1960-12-27
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Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 James B Mackay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:33
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/44; H; H03; H03K; H03K3/00; H03K3/02; H03K3/38; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/856; Y10S505/857; Y10S505/863
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) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |