US3483419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Velocity modulation tube with r.f. lossy leads to the beam focusing lenses
Assignee: Varian Medical Systems Inc
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Filing: 1967-12-18
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Granted: 1969-12-09
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Expires: 1987-12-18
Abstract
No abstract record available.
Inventors
- 👤 William R Luebke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:51
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/14; H01J23/15; H01J23/02; H01J23/08; H01J23/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |