US2915670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Klystron amplifier
Assignee: Varian Medical Systems Inc
•
Filing: 1954-07-22
•
Granted: 1959-12-01
•
Expires: 1974-07-22
Abstract
No abstract record available.
Inventors
- 👤 Louis T Zitelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:02
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/02; H01J25/10; H01J25/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2109880A
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US2197652A
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US2409608A
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US2444435A
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US2496378A
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US2466922A
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US2653271A
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US2606302A
Cited
US2720628A
Cited
US2619611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |