US2996639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge apparatus of the beam type
Assignee: Varian Medical Systems Inc
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Filing: 1959-04-13
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Granted: 1961-08-15
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Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 Robert L Jepsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:25
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/11; H01J25/00; H01J25/02; H01J25/10; H01J25/12; H01J25/22; H01J25/24
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) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |