Patent US6667818B1 successfully refreshed from Google Patents.
US2945155A
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Resonator and velocity modulation device using same
Assignee: Varian Medical Systems Inc
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Filing: 1954-06-21
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Granted: 1960-07-12
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Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Chodorow Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:11
CPC Classifications
H; H05; H05H; H05H7/00; H05H7/14; H05H7/18; H01; H01J; H01J25/00; H01J25/02; H01J25/10; H01J25/11; H01J25/22; H01J25/24; H01J25/34; H01J25/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1991282A
Cited
US1978021A
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US2653270A
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US2630544A
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US2789247A
Cited
GB668017A
Cited
US2836758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |