Patent US3345533A successfully refreshed from Google Patents.
US3345533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traveling wave tube attenuator
Assignee: Westinghouse Electric Corp
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Filing: 1964-04-27
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Granted: 1967-10-03
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Expires: 1984-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick L Washburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:30
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A TRAVELLING WAVE TUBE COMPRISING A SLOW WAVE PROPAGATING STRUCTURE FOR GUIDING ELECTROMAGNETIC ENERGY FOR INTERACTION WITH AN ELECTRON BEAM, A VACUUM ENVELOPE, A PLURALITY OF DIELECTRIC ELEMENTS FOR SUPPORTING SAID PROPAGATING STRUCTURE WITHIN SAID ENVELOPE AND PROVIDING THERMAL TRANSFER FROM SAID HELIX TO SAID ENVELOPE, AND A PLURALITY OF SEPARATE ATTENUATOR ELEMENTS POSITIONED BETWEEN SAID SLOW WAVE PROPAGATING STRUCTURE AND SAID ENVELOPE AND IN THE SPACES PROVIDED BETWEEN SAID DIELECTRIC ELEMENTS.
Claim 2
Dependent Claim
72 words
A TRAVELLING WAVE TUBE COMPRISING A SLOW WAVE PROPAGATING STRUCTURE FOR GUIDING ELECTROMAGNETIC ENERGY FOR INTERACTION WITH AN ELECTRON BEAM, A VACUUM ENVELOPE, A PLURALITY OF DIELECTRIC ELEMENTS FOR SUPPORTING SAID PROPAGATING STRUCTURE WITHIN SAID ENVELOPE AND PROVIDING THERMAL TRANSFER FROM SAID HELIX TO SAID ENVELOPE, AND A PLURALITY OF SEPARATE ATTENUATOR ELEMENTS POSITIONED BETWEEN SAID SLOW WAVE PROPAGATING STRUCTURE AND SAID ENVELOPE AND IN THE SPACES PROVIDED BETWEEN SAID DIELECTRIC ELEMENTS.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |