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US3348897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curved screens for projecting motion picture films or the like
Assignee: Individual
•
Filing: 1966-09-07
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Granted: 1967-10-24
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Expires: 1986-09-07
Abstract
No abstract record available.
Inventors
- 👤 Hourdiaux Jules
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:35
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROJECTION SCREEN COMPRISING A SERIES OF INDIVIDUAL PANELS, EACH PANEL COMPRISING A SECTIONAL MEMBER HAVING LONGITUDINAL EDGES PROVIDED WITH COMPLEMENTARY POSITIONING MEANS SAID SECTIONAL MEMBER BEING FORMED WITH A PLURALITY OF INTEGRAL LONGITUDINAL RIBS, EACH RIB HAVING A LIGHT-DIFFUSING FRONT FACE, SAID FRONT FACES TOGETHER CONSTUTING A SINGLE CURVED PROJECTION SURFACE AND BEING SUBSTANTIALLY PARALLEL TO A DIRECTION PERPENDICULAR TO THE PROJECTION AXIS THROUGHOUT THE SCREEN SURFACE, SAID SECTIONAL MEMBER FURTHER COMPRISING TWO REARWARD SIDE LUGS PAR-
Claim 2
Dependent Claim
78 words
A PROJECTION SCREEN COMPRISING A SERIES OF INDIVIDUAL PANELS, EACH PANEL COMPRISING A SECTIONAL MEMBER HAVING LONGITUDINAL EDGES PROVIDED WITH COMPLEMENTARY POSITIONING MEANS SAID SECTIONAL MEMBER BEING FORMED WITH A PLURALITY OF INTEGRAL LONGITUDINAL RIBS, EACH RIB HAVING A LIGHT-DIFFUSING FRONT FACE, SAID FRONT FACES TOGETHER CONSTUTING A SINGLE CURVED PROJECTION SURFACE AND BEING SUBSTANTIALLY PARALLEL TO A DIRECTION PERPENDICULAR TO THE PROJECTION AXIS THROUGHOUT THE SCREEN SURFACE, SAID SECTIONAL MEMBER FURTHER COMPRISING TWO REARWARD SIDE LUGS PAR-
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |