US3221204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traveling-wave tube with trap means for preventing oscillation at unwanted frequencies
Assignee: Raytheon Co
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Filing: 1961-11-20
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Granted: 1965-11-30
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Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Hant William
- 👤 Modrins V Kreismanis
- 👤 Allan W Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:25
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/30; H01J25/00; H01J25/34; H01J25/36; H01J25/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A DEVICE FOR PROVIDING INTERACRTION BETWEEN A STREAM OF CHARGED PARTICLES PROJECTED ALONG A PREDETERMINED PATH AND AN ELECTROMAGNETIC WAVE COMPRISING: SLOW-WAVE STRUCTURE MEANS FOR PROPAGATING SAID ELECTROMAGNETIC WAVE IN SUCH MANNER AS TO PROVIDE ENERGY EXCHANGE BETWEEN SAID STREAM OF CHARGED PARTICLES AND SAID ELECTROMAGNETIC WAVE, MEANS DEFINING AT LEAST ONE CAVITY ELECTROMAGNETICALLY
Claim 2
Independent Claim
54 words
A DEVICE FOR PROVIDING INTERACRTION BETWEEN A STREAM OF CHARGED PARTICLES PROJECTED ALONG A PREDETERMINED PATH AND AN ELECTROMAGNETIC WAVE COMPRISING: SLOW-WAVE STRUCTURE MEANS FOR PROPAGATING SAID ELECTROMAGNETIC WAVE IN SUCH MANNER AS TO PROVIDE ENERGY EXCHANGE BETWEEN SAID STREAM OF CHARGED PARTICLES AND SAID ELECTROMAGNETIC WAVE, MEANS DEFINING AT LEAST ONE CAVITY ELECTROMAGNETICALLY
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |