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US3501631A
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US
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Charged particle trapping means employing a voltage divider and a plurality of simple conductors to produce complex trapping fields
Assignee: Varian Medical Systems Inc
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Filing: 1968-10-21
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Granted: 1970-03-17
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Expires: 1988-10-21
Abstract
No abstract record available.
Inventors
- 👤 James T Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:43
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/26; H01J49/34; H01J49/42; H01J49/4205; H01J49/422; H01J49/424
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2939952A
Cited
US3280326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |