Patent US3150284A successfully refreshed from Google Patents.
US3150284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for use in conjunction with a cathode ray tube to reduce defocusing and astigmatism of an electron beam thereof
Assignee: Lanteris Space LLC
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Filing: 1962-09-17
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Granted: 1964-09-22
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Expires: 1982-09-17
Abstract
No abstract record available.
Inventors
- 👤 Charles P Comeau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:17
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
APPARATUS FOR USE IN CONJUCTION WITH A CATHODE-RAY TUBE TO REDUCE DEFOCUSING AND ASTIGMATISM OF AN ELECTRON BEAM THEREOF, COMPRISING AN ELECTRICAL CONDUCTOR ENCIRCLING A REGION TRAVERSED BY SAID BEAM WITHOUT INTERSECTING ANY PATH OF SAID BEAM, AND DESCRIBING ABOUT SAID REGION A PATH UNDULATING BETWEEN TWO SURFACES TRANSVERSE TO THE AXIS OF SAID BEAM, SAID UNDULATING CONDUCTOR, WHEN SUPPLIED WITH AN ELECTRIC CURRENT, PRODUCING AN N-POLE MAGNETIC FIELD, WHERE N IS AN INTEGER MULTIPLE OF FOUR, AND SAID UNDULATIONS OF SAID CONDUCTOR HAVING AN ORIENTATION RELATIVE TO SAID BEAM SUCH THAT SAID N-POLE MAGNETIC FIELD INTERACTS WITH SAID BEAM TO REDUCE SAID ASTIGMATISM THEREOF, AND MEANS FOR SUPPLYING TO SAID CONDUCTOR AN ELECTRIC CURRENT HAVING AN INTENSITY DEPENDENT ON THE POSITION OF SAID BEAM.
Claim 2
Dependent Claim
125 words
APPARATUS FOR USE IN CONJUCTION WITH A CATHODE-RAY TUBE TO REDUCE DEFOCUSING AND ASTIGMATISM OF AN ELECTRON BEAM THEREOF, COMPRISING AN ELECTRICAL CONDUCTOR ENCIRCLING A REGION TRAVERSED BY SAID BEAM WITHOUT INTERSECTING ANY PATH OF SAID BEAM, AND DESCRIBING ABOUT SAID REGION A PATH UNDULATING BETWEEN TWO SURFACES TRANSVERSE TO THE AXIS OF SAID BEAM, SAID UNDULATING CONDUCTOR, WHEN SUPPLIED WITH AN ELECTRIC CURRENT, PRODUCING AN N-POLE MAGNETIC FIELD, WHERE N IS AN INTEGER MULTIPLE OF FOUR, AND SAID UNDULATIONS OF SAID CONDUCTOR HAVING AN ORIENTATION RELATIVE TO SAID BEAM SUCH THAT SAID N-POLE MAGNETIC FIELD INTERACTS WITH SAID BEAM TO REDUCE SAID ASTIGMATISM THEREOF, AND MEANS FOR SUPPLYING TO SAID CONDUCTOR AN ELECTRIC CURRENT HAVING AN INTENSITY DEPENDENT ON THE POSITION OF SAID BEAM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |