US3141116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic device for focusing an electron beam
Assignee: Telefunken Patentverwertungs GmbH
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Filing: 1962-04-23
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Granted: 1964-07-14
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Expires: 1982-04-23
Abstract
No abstract record available.
Inventors
- 👤 Henne Willibald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:02
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02; H01F7/0273; H01F7/0278; H01J; H01J23/00; H01J23/02; H01J23/08; H01J23/087; H01J23/0873
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A PERMANENT MAGNET ARRANGEMENT FOR PERIODICALLY FOCUSING AN ELECTRON BEAM IN A VACUUM ENVELOPE, THE ARRANGEMENT BEING OF THE TYPE INCLUDING SEVERAL RADIALLY MAGNETIZED PERMANENT RING MAGNETS WITH CONSECUTIVE MAGNETS HAVING OPPOSITE POLARITY AND DISPOSED COAXIALLY TO ONE ANOTHER AND SPACED FROM EACH OTHER, AND A FERROMAGNETIC CYLINDER SURROUNDING THE OUTER CIRCUMFERENCE OF THE RINGS, THE IMPROVEMENT COMPRISING A FERROMAGNETIC ANNULAR DISC DISPOSED AT EACH END OF THE FERROMAGNETIC CYLINDER.
Claim 2
Dependent Claim
71 words
IN A PERMANENT MAGNET ARRANGEMENT FOR PERIODICALLY FOCUSING AN ELECTRON BEAM IN A VACUUM ENVELOPE, THE ARRANGEMENT BEING OF THE TYPE INCLUDING SEVERAL RADIALLY MAGNETIZED PERMANENT RING MAGNETS WITH CONSECUTIVE MAGNETS HAVING OPPOSITE POLARITY AND DISPOSED COAXIALLY TO ONE ANOTHER AND SPACED FROM EACH OTHER, AND A FERROMAGNETIC CYLINDER SURROUNDING THE OUTER CIRCUMFERENCE OF THE RINGS, THE IMPROVEMENT COMPRISING A FERROMAGNETIC ANNULAR DISC DISPOSED AT EACH END OF THE FERROMAGNETIC CYLINDER.
References Cited (Backward Citations)
FR1080230A
Cited
US2867744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |