US3331985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Character generating system utilizing a cathode ray tube in which a portion of a plurality of electron beams are selectively defocussed to form the character
Assignee: Stromberg Carlson Corp
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Filing: 1964-07-17
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Granted: 1967-07-18
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Expires: 1984-07-17
Abstract
No abstract record available.
Inventors
- 👤 Omer F Hamann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:55
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A CATHODE-RAY TUBE DATA READOUT SYSTEM, A TARGET SCREEN, MEANS FOR PRODUCING A PLURALITY OF ELECTRON BEAMS, AT LEAST SOME OF WHICH ARE TO BE DIRECTED AT SAID TARGET SCREEN TO MANIFEST A PARTICULAR CHARACTER, A BARRIER SITUATED BETWEEN SAID LAST-NAMED MEANS AND SAID TARGET SCREEN, SAID BARRIER HAVING AN APERTURE, AND FOCUS CONTROL MEANS FOR SELECTIVELY CAUSING A GROUP OF SAID ELECTRON BEAMS TO BE FOCUSED WITH RESPECT TO SAID APERTURE TO TRANSMIT SAID GROUP OF ELECTRON BEAMS TO SAID TARGET SCREEN AND FOR SSLECTIVELY CAUSING THE REMAINING ONES OF SAID ELECTRON BEAMS TO BE DEFOCUSED WITH RESPECT TO SAID APERTURE TO CAUSE INTERCEPTION OF THE ELECTRONS OF SAID REMAINING ONES BY SAID BARRIER.
Claim 2
Dependent Claim
116 words
IN A CATHODE-RAY TUBE DATA READOUT SYSTEM, A TARGET SCREEN, MEANS FOR PRODUCING A PLURALITY OF ELECTRON BEAMS, AT LEAST SOME OF WHICH ARE TO BE DIRECTED AT SAID TARGET SCREEN TO MANIFEST A PARTICULAR CHARACTER, A BARRIER SITUATED BETWEEN SAID LAST-NAMED MEANS AND SAID TARGET SCREEN, SAID BARRIER HAVING AN APERTURE, AND FOCUS CONTROL MEANS FOR SELECTIVELY CAUSING A GROUP OF SAID ELECTRON BEAMS TO BE FOCUSED WITH RESPECT TO SAID APERTURE TO TRANSMIT SAID GROUP OF ELECTRON BEAMS TO SAID TARGET SCREEN AND FOR SSLECTIVELY CAUSING THE REMAINING ONES OF SAID ELECTRON BEAMS TO BE DEFOCUSED WITH RESPECT TO SAID APERTURE TO CAUSE INTERCEPTION OF THE ELECTRONS OF SAID REMAINING ONES BY SAID BARRIER.
References Cited (Backward Citations)
US2862144A
Cited
US3198976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |