Patent US3205414A successfully refreshed from Google Patents.
US3205414A
Expired / Lapsed
US
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Correction magnets for cathode-ray tubes and methods for magnetizing same
Assignee: Magnetfabrik Bonn GmbH
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Filing: 1961-07-03
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Granted: 1965-09-07
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Expires: 1981-07-03
Abstract
No abstract record available.
Inventors
- 👤 Erich A Steingroever
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:41
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04; H01F1/06; H01F1/08; H01F1/083; H01F1/10; H01F1/11; H01F1/113; H01J; H01J29/00; H01J29/46; H01J29/54; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49076
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
70 words
A PERMANENT MAGNETIC DEVICE FOR A CATHODE-RAY TUBE NECK COMPRISING A CORRECTION RING HAVING A MAGNETIZED ANNULAR PORTION ADAPTED TO SURROUND SAID NECK AND A MANIPULATING HANDLE PROJECTING FROM THE OUTER PERIPHERY OF SAID ANNULAR PORTION, SAID ANNULAR PORTION AND HANDLE FORMING A UNITARY STRUCTURE MADE OF THE SAME MAGNETIC COMPOSITION, SAID MANIPULATING HANDLE HAVING A MAGNETIC CHARACTERISTIC CAUSING SUBSTANTIALLY NO INTERFERENCE WITH THE MAGNETIC FIELD OF SAID ANNULAR PORTION.
Claim 2
Dependent Claim
70 words
A PERMANENT MAGNETIC DEVICE FOR A CATHODE-RAY TUBE NECK COMPRISING A CORRECTION RING HAVING A MAGNETIZED ANNULAR PORTION ADAPTED TO SURROUND SAID NECK AND A MANIPULATING HANDLE PROJECTING FROM THE OUTER PERIPHERY OF SAID ANNULAR PORTION, SAID ANNULAR PORTION AND HANDLE FORMING A UNITARY STRUCTURE MADE OF THE SAME MAGNETIC COMPOSITION, SAID MANIPULATING HANDLE HAVING A MAGNETIC CHARACTERISTIC CAUSING SUBSTANTIALLY NO INTERFERENCE WITH THE MAGNETIC FIELD OF SAID ANNULAR PORTION.
Claim 3
Independent Claim
49 words
THE METHOD OF MAGNETIZING MAGNETIC CORRECTION RINGS FOR CATHODE RAY TUBES, WHICH RINGS ARE PROVIDED WITH INTEGRAL PROJECTING HANDLES OF THE SAME MATERIAL AS SAID RINGS, COMPRISING THE STEPS OF SHIELDING SAID HANDLES FROM MAGNETIC EFFECTS AND MAGNETIZING THE ANNULAR PORTION OF SAID RING WHILE SAID HANDLE IS SHIELDED.
Claim 4
Independent Claim
49 words
THE METHOD OF MAGNETIZING MAGNETIC CORRECTION RINGS FOR CATHODE RAY TUBES, WHICH RINGS ARE PROVIDED WITH INTEGRAL PROJECTING HANDLES OF THE SAME MATERIAL AS SAID RINGS, COMPRISING THE STEPS OF SHIELDING SAID HANDLES FROM MAGNETIC EFFECTS AND MAGNETIZING THE ANNULAR PORTION OF SAID RING WHILE SAID HANDLE IS SHIELDED.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |