US2748017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection slide and method of preparing the same
Assignee: Individual
•
Filing: 1953-05-01
•
Granted: 1956-05-29
•
Expires: 1973-05-01
Abstract
No abstract record available.
Inventors
- 👤 Frederick V Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:08
CPC Classifications
G; G03; G03D; G03D15/00; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24364
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROJECTION SLIDE HAVING A PATTERN CONTAINING INTELLIGENCE TO BE PROJECTED COMPRISING A SHEET OF LIGHTTRANSPARENT MATERIAL A CONTINUOUS SURFACE OF WHICH IS OPTICALLY ROUGHENED THROUGHOUT TO PROVIDE THE CONTINUOUS SURFACE WITH A MATTE CONSTITUTED OF VERY SMALL CLOSELY POSITIONED LIGHT-SCATTERING AND LIGHT-DIFFUSING DEPRESSIONS, THE MATTE HAVING A PORTION IN THE SHAPE OF THE PATTERN IN THE DEPRESSIONS OF WHICH THERE IS DEPOSITED A SUBSTANTIALLY LIGHT-OPAQUE SUBSTANCE FOR RENDERING THE SAID PORTION OF THE MATTE SUBSTANTIALLY OPAQUE, AND THE DEPRESSIONS IN THE NON-PATTERN-SHAPED PORTION OF THE MATTE CONTAINING A LIGHT-TRANSPARENT FILLER THAN RENDERS THE SHEET LIGHTTRANSPARENT THROUGH THE NON-PATTERN-SHAPED PORTION.
Claim 2
Dependent Claim
100 words
A PROJECTION SLIDE HAVING A PATTERN CONTAINING INTELLIGENCE TO BE PROJECTED COMPRISING A SHEET OF LIGHTTRANSPARENT MATERIAL A CONTINUOUS SURFACE OF WHICH IS OPTICALLY ROUGHENED THROUGHOUT TO PROVIDE THE CONTINUOUS SURFACE WITH A MATTE CONSTITUTED OF VERY SMALL CLOSELY POSITIONED LIGHT-SCATTERING AND LIGHT-DIFFUSING DEPRESSIONS, THE MATTE HAVING A PORTION IN THE SHAPE OF THE PATTERN IN THE DEPRESSIONS OF WHICH THERE IS DEPOSITED A SUBSTANTIALLY LIGHT-OPAQUE SUBSTANCE FOR RENDERING THE SAID PORTION OF THE MATTE SUBSTANTIALLY OPAQUE, AND THE DEPRESSIONS IN THE NON-PATTERN-SHAPED PORTION OF THE MATTE CONTAINING A LIGHT-TRANSPARENT FILLER THAN RENDERS THE SHEET LIGHTTRANSPARENT THROUGH THE NON-PATTERN-SHAPED PORTION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |