Patent US3116435A successfully refreshed from Google Patents.
US3116435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Velocity modulation tube
Assignee: Varian Medical Systems Inc
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Filing: 1959-07-28
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Granted: 1963-12-31
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Expires: 1979-07-28
Abstract
No abstract record available.
Inventors
- 👤 Heil Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:04
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/02; H01J25/10; H01J25/12; H01J23/00; H01J23/02; H01J23/08; H01J23/083; H01J25/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
A VELOCITY MODULATED TUBE INCLUDING AN EVACUATED ENVELOPE AND COMPRISING AN ELECTRON GUN FOR GENERATING AN OVER-ROLLING CONVERGENT ELECTRON BEAM ALONG AN AXIS AND WHICH FOCUSES TO A MINIMUM DIAMETER ON SAID AXIS, A COLLECTOR ELECTRODE FORMING A PART OF THE EVACUATED ENVELOPE FOR RECEIVING SAID BEAM OF ELECTRONS, A CAVITY RESONATOR HAVING TWO COAXIAL APERTURES ON OPPOSITE SIDES THEREOF, AND A DRIFT TUBE SECTION INTERPOSED COAXIALLY BETWEEN SAID ELECTRON GUN AND SAID COLLECTOR ELECTRODE FORMING A CONTROL GAP ADJACENT SAID ELECTRON GUN WITH ONE OF SAID APERTURES OF SAID CAVITY RESONATOR AND FORMING A WORKING GAP ADJACENT SAID COLLECTOR ELECTRODE WITH THE OTHER OF SAID APERTURES OF SAID CAVITY RESONATOR, SAID ELEC-
References Cited (Backward Citations)
US2411535A
Cited
US2508316A
Cited
US2455269A
Cited
US2487800A
Cited
US2422695A
Cited
US2466064A
Cited
US2621304A
Cited
US2659024A
Cited
US2679613A
Cited
US2720611A
Cited
US2777969A
Cited
US2807746A
Cited
US2817033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |