US3188518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Undulating beam traveling wave tube focusing structure
Assignee: General Electric Co
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Filing: 1961-09-26
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Granted: 1965-06-08
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Expires: 1981-09-26
Abstract
No abstract record available.
Inventors
- 👤 Robert M Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:17
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/08; H01J23/087; H01J23/0873
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A CHARGED PARTICLE STREAM FOCUSING STRUCTURE COMPRISING: MEANS FOR PROJECTING A STREAM OF CHARGED PARTICLES ALONG AN AXIS; AND A MAGNETIC FIELD PRODUCING STRUCTURE DISPOSED ALONG SAID AXIS FOR PRODUCING A STEADY MAGNETIC FIELD PERPENDICULAR TO SAID AXIS, SAID MAGNETIC FIELD ALTERNATING IN DIRECTION AS A FUNCTION OF A DISTANCE ALONG SAID AXIS WHEREBY SAID STREAM IS CAUSED TO UNDULATE IN A DIRECTION TRANSVERSE TO SAID AXIS, SAID MAGNETIC FIELD PRODUCING STRUCTURE INCLUDING MEANS PROVIDING A GREATER
Claim 2
Dependent Claim
77 words
A CHARGED PARTICLE STREAM FOCUSING STRUCTURE COMPRISING: MEANS FOR PROJECTING A STREAM OF CHARGED PARTICLES ALONG AN AXIS; AND A MAGNETIC FIELD PRODUCING STRUCTURE DISPOSED ALONG SAID AXIS FOR PRODUCING A STEADY MAGNETIC FIELD PERPENDICULAR TO SAID AXIS, SAID MAGNETIC FIELD ALTERNATING IN DIRECTION AS A FUNCTION OF A DISTANCE ALONG SAID AXIS WHEREBY SAID STREAM IS CAUSED TO UNDULATE IN A DIRECTION TRANSVERSE TO SAID AXIS, SAID MAGNETIC FIELD PRODUCING STRUCTURE INCLUDING MEANS PROVIDING A GREATER
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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |