Patent US2997392A successfully refreshed from Google Patents.
US2997392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of gravure reproduction
Assignee: Art Color Printing Co
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Filing: 1957-12-19
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Granted: 1961-08-22
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Expires: 1977-12-19
Abstract
No abstract record available.
Inventors
- 👤 John G Consaul
- 👤 Veltin Edwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:22
CPC Classifications
G; G03; G03F; G03F5/00; G03F5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
THE METHOD OF FORMING A SCREENED IMAGE OF COPY TO BE REPRODUCED ON LIGHT SENSITIVE MATERIAL WITH APPARATUS COMPRISING A COPYING CAMERA HAVING A LENS ASSEMBLY, A HALF-TONE SCREEN AND AN AUXILIARY SCREEN ADAPTED TO BE MOUNTED IN SAID LENS ASSEMBLY AND HAVING A PLURALITY OF LIGHT OPENINGS ARRANGED IN A PLURALITY OF SUBSTANTIALLY STRAIGHT LINES THAT CROSS AT ANGLES EQUAL TO THE ANGLES BETWEEN THE OPAQUE LINES OF SAID HALF-TONE SCREEN, ONE SAID SCREEN BEING ADJUSTABLE TO A POSITION WITH RESPECT TO THE OTHER SAID SCREEN SUCH THAT SAID SCREENS ARE SUBSTANTIALLY PARALLEL TO EACH OTHER AND SAID LINES OF SAID AUXILIARY SCREEN ARE SUBSTANTIALLY PARALLEL TO THE OPAQUE LINES OF SAID HALF-TONE SCREEN, SAID METHOD COMPRISING EXPOSING SAID MATERIAL ONCE TO SAID COPY THROUGH SAID
Claim 2
Independent Claim
127 words
THE METHOD OF FORMING A SCREENED IMAGE OF COPY TO BE REPRODUCED ON LIGHT SENSITIVE MATERIAL WITH APPARATUS COMPRISING A COPYING CAMERA HAVING A LENS ASSEMBLY, A HALF-TONE SCREEN AND AN AUXILIARY SCREEN ADAPTED TO BE MOUNTED IN SAID LENS ASSEMBLY AND HAVING A PLURALITY OF LIGHT OPENINGS ARRANGED IN A PLURALITY OF SUBSTANTIALLY STRAIGHT LINES THAT CROSS AT ANGLES EQUAL TO THE ANGLES BETWEEN THE OPAQUE LINES OF SAID HALF-TONE SCREEN, ONE SAID SCREEN BEING ADJUSTABLE TO A POSITION WITH RESPECT TO THE OTHER SAID SCREEN SUCH THAT SAID SCREENS ARE SUBSTANTIALLY PARALLEL TO EACH OTHER AND SAID LINES OF SAID AUXILIARY SCREEN ARE SUBSTANTIALLY PARALLEL TO THE OPAQUE LINES OF SAID HALF-TONE SCREEN, SAID METHOD COMPRISING EXPOSING SAID MATERIAL ONCE TO SAID COPY THROUGH SAID
References Cited (Backward Citations)
US2182559A
Cited
US2376596A
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US2239386A
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US2482638A
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US2596115A
Cited
US2703281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |