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Patent US3070725A successfully refreshed from Google Patents.
US3070725A
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Travelling wave amplifier
Assignee: Varian Medical Systems Inc
•
Filing: 1958-03-17
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Granted: 1962-12-25
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Expires: 1978-03-17
Abstract
No abstract record available.
Inventors
- 👤 Terry G Lee
- 👤 Sievers Albert John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:42
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/36; H01J25/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3005126A
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US2789246A
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US2765421A
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US2694183A
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US2891190A
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US2770722A
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US2798204A
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US2991391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |