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US3198994A
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US
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Superconductive magnetic-fieldtrapping device
Assignee: California Institute Research Foundation
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Filing: 1961-11-29
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Granted: 1965-08-03
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Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 Alvin F Hildebrandt
- 👤 Daniel D Elleman
- 👤 Frank C Whitmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:16
CPC Classifications
H; H01; H01F; H01F6/00; H05; H05H; H05H1/00; H05H1/02; H05H1/10; Y; Y02; Y02E; Y02E30/00; Y02E30/10; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/88
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2916615A
Cited
US2946030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |