Patent US3419904A successfully refreshed from Google Patents.
US3419904A
Expired / Lapsed
US
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Superconductive solenoid having winding segments additionally energized for gradient control
Assignee: Varian Medical Systems Inc
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Filing: 1966-05-05
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Granted: 1968-12-31
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Expires: 1986-05-05
Abstract
No abstract record available.
Inventors
- 👤 Harry E Weaver
- 👤 Floyd E F Kingston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:21
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/006; H01F6/008; G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/38; G01R33/381; G01R33/3815; H01F29/00; H01F29/14; H01F29/143; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/851
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) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |