Patent US5797922A successfully refreshed from Google Patents.
Patent US3227913A successfully refreshed from Google Patents.
US3227913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam tube and circuitry therefor
Assignee: Varian Medical Systems Inc
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Filing: 1961-07-13
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Granted: 1966-01-04
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Expires: 1981-07-13
Abstract
No abstract record available.
Inventors
- 👤 Murray I Disman
- 👤 Samuel J Millward
- 👤 Mizuhara Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:39
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/06; H01J23/065; H01J23/36; H01J23/40; H01J23/48; H01J23/50; H01J25/00; H01J25/34; H01J25/36; H01J25/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
WAVE TRANSMISSION APPARATUS COMPRISING AN EVACUATED ENVELOPE ENCLOSING AN ELECTRON GUN FOR PROJECTING AN ELECTRON BEAM AND A COLLECTOR FOR COLLECTING THE BEAM, INTERACTION MEANS OPERATIVELY INTERPOSED BETWEEN THE GUN AND COLLECTOR ARRANGED TO PROVIDE INTERACTION BETWEEN THE ELECTRON BEAM AND AN ELECTROMAGNETIC WAVE TRANSMITTED THEREALONG, SAID INTERACTION MEANS HAVING A TUBULAR ENVELOPE SHAPE, ELECTROMAGNETIC WAVE INPUT AND OUTPUT COUPLING MEANS OPERATIVELY ASSOCIATED WITH OPPOSITE ENDS OF THE INTERACTION MEANS, A PLURALITY OF MAGNETIC RINGS AND POLE PIECES STACKED ON SAID TUBULAR ENVELOPE BETWEEN AND GUN AND SAID COLLECTOR, BODY OF SOLID DIELECTRIC MATERIAL SURROUNDING SAID MAGNETIC RINGS AND POLE PIECES AND A PORTION OF SAID GUN, AND SLEEVE MEANS AROUND SAID DIELECTRIC MATERIAL FOR ENABLING THE DIELECTRIC MATERIAL TO BE APPLIED IN LIQUID FORM AND TO FORM A RIGID OUTER SUPPORT FOR INTERCONNECTING SAID GUN AND SAID INTERACTION MEANS.
Claim 2
Dependent Claim
140 words
WAVE TRANSMISSION APPARATUS COMPRISING AN EVACUATED ENVELOPE ENCLOSING AN ELECTRON GUN FOR PROJECTING AN ELECTRON BEAM AND A COLLECTOR FOR COLLECTING THE BEAM, INTERACTION MEANS OPERATIVELY INTERPOSED BETWEEN THE GUN AND COLLECTOR ARRANGED TO PROVIDE INTERACTION BETWEEN THE ELECTRON BEAM AND AN ELECTROMAGNETIC WAVE TRANSMITTED THEREALONG, SAID INTERACTION MEANS HAVING A TUBULAR ENVELOPE SHAPE, ELECTROMAGNETIC WAVE INPUT AND OUTPUT COUPLING MEANS OPERATIVELY ASSOCIATED WITH OPPOSITE ENDS OF THE INTERACTION MEANS, A PLURALITY OF MAGNETIC RINGS AND POLE PIECES STACKED ON SAID TUBULAR ENVELOPE BETWEEN AND GUN AND SAID COLLECTOR, BODY OF SOLID DIELECTRIC MATERIAL SURROUNDING SAID MAGNETIC RINGS AND POLE PIECES AND A PORTION OF SAID GUN, AND SLEEVE MEANS AROUND SAID DIELECTRIC MATERIAL FOR ENABLING THE DIELECTRIC MATERIAL TO BE APPLIED IN LIQUID FORM AND TO FORM A RIGID OUTER SUPPORT FOR INTERCONNECTING SAID GUN AND SAID INTERACTION MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |