US3109239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screen angle indicator
Assignee: Individual
•
Filing: 1960-09-12
•
Granted: 1963-11-05
•
Expires: 1980-09-12
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Wicker
- 👤 Walter R Shaughnessy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:07
CPC Classifications
G; G03; G03F; G03F5/00; G03F5/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
A SCREEN ANGLE INDICATOR FOR COLOR LITHOGRAPH SCREENS, COMPRISING A TRANSPARENT SHEET HAVING AN ANGLE SCALE THEREON, AND MEANS ASSOCIATED WITH SAID SCREEN COMPRISING A PARTIALLY TRANSPARENT REGION, SAID REGION BEING COMPOSED OF A SERIES OF UNIFORMLY SPACED OPAQUE DOTS EACH OF UNIFORM AREA DISPOSED IN EQUALLY SPACED PARALLEL ROWS EXTENDING IN TWO DIRECTIONS AT ANGLES TO EACH OTHER, THE TOTAL AREA OF SAID OPAQUE DOTS BEING LESS THAN 50% OF THE PARTIALLY TRANSPARENT REGION, AND THE SPACING BETWEEN DOTS ALONG SAID PARALLEL ROWS BEING UNIFORM AND CORRESPONDING TO A STANDARD COLOR SCREEN DOT PATTERN, AND AT LEAST ONE ROW OF SAID DOTS LYING ON A LINE EXTENDING SUBSTANTIALLY RADIAL WITH RESPECT TO SAID SCALE.
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |