US3279313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projector screens and method and apparatus for using same
Assignee: International Product Design and Research Corp
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Filing: 1964-05-18
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Granted: 1966-10-18
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Expires: 1984-05-18
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Kowalik
- 👤 Anthony J Vallelunga
- 👤 Albert J Perron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:52
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/60; G03B21/602
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROJECTOR SCREEN FOR BRILLIANTLY DISPLAYING THE IMAGE OF PICTURES PROJECTED THEREON COMPRISING: A GENERALLY FLAT BACKING MEMBER A PLURALITY OF TRANSPARENT SPHERES SECURED TO SAID BANKING MEMBER, EACH OF SAID SPHERES HAVING: A REFLECTIVE SURFACE AT A FIRST ZONE, AN EXPOSED TRANSPARENT SURFACE AT A SECOND ZONE, AND A MATTE BLACK SURFACE AT A THIRD ZONE EACH OF SAID ZONES BEING DEFINED BY SPACED PLANES NORMAL TO A DIAMETER OF A SPHERE TAKEN IN A DIRECTION PERPENDICULAR TO THE BACKING MEMBER; SAID THIRD ZONE OF EACH SPHERE BEING BETWEEN SAID FIRST AND SECOND ZONE;
Claim 2
Dependent Claim
95 words
A PROJECTOR SCREEN FOR BRILLIANTLY DISPLAYING THE IMAGE OF PICTURES PROJECTED THEREON COMPRISING: A GENERALLY FLAT BACKING MEMBER A PLURALITY OF TRANSPARENT SPHERES SECURED TO SAID BANKING MEMBER, EACH OF SAID SPHERES HAVING: A REFLECTIVE SURFACE AT A FIRST ZONE, AN EXPOSED TRANSPARENT SURFACE AT A SECOND ZONE, AND A MATTE BLACK SURFACE AT A THIRD ZONE EACH OF SAID ZONES BEING DEFINED BY SPACED PLANES NORMAL TO A DIAMETER OF A SPHERE TAKEN IN A DIRECTION PERPENDICULAR TO THE BACKING MEMBER; SAID THIRD ZONE OF EACH SPHERE BEING BETWEEN SAID FIRST AND SECOND ZONE;
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |