Patent US3145264A successfully refreshed from Google Patents.
US3145264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hans-richard schulz
Assignee: —
•
Filing: 1960-12-20
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Granted: 1964-08-18
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Expires: 1980-12-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:48
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
AN OPTICAL DEVICE FOR THE REMOVAL OF VISIBLE LINE STRUCTURE IN PICTURES ON THE VIDEO SCREEN OF A TELEVISION TUBE AND COMPRISING A TRANSPARENT OPTICAL DIAPHRAGM BETWEEN THE VIEWER AND THE PICTURE PRODUCED ON THE VIDEO SCREEN, SAID DIAPHRAGM HAVING A PLURALITY OF GROOVES PARALLEL TO THE LINE STRUCTURE ON THE VIDEO SCREEN AND SPACED CLOSER THAN THE SPACING BETWEEN PICTURE LINES, SAID PARALLEL GROOVES HAVING CURVED PROFILE P AS A FUNCTION OF AN ORDINATE Q MEASURED PERPENDICULARLY TO THE EXTENSION OF SAID GROOVES, WITH THE MAXIMUM VALUE OF THE TERM
Claim 2
Dependent Claim
91 words
AN OPTICAL DEVICE FOR THE REMOVAL OF VISIBLE LINE STRUCTURE IN PICTURES ON THE VIDEO SCREEN OF A TELEVISION TUBE AND COMPRISING A TRANSPARENT OPTICAL DIAPHRAGM BETWEEN THE VIEWER AND THE PICTURE PRODUCED ON THE VIDEO SCREEN, SAID DIAPHRAGM HAVING A PLURALITY OF GROOVES PARALLEL TO THE LINE STRUCTURE ON THE VIDEO SCREEN AND SPACED CLOSER THAN THE SPACING BETWEEN PICTURE LINES, SAID PARALLEL GROOVES HAVING CURVED PROFILE P AS A FUNCTION OF AN ORDINATE Q MEASURED PERPENDICULARLY TO THE EXTENSION OF SAID GROOVES, WITH THE MAXIMUM VALUE OF THE TERM
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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |