US3282154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audiovisual projection system
Assignee: Individual
•
Filing: 1963-11-27
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Granted: 1966-11-01
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Expires: 1983-11-27
Abstract
No abstract record available.
Inventors
- 👤 Panayotis C Dimitracopoulos
- 👤 Constantine D Pezaris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:15
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/06; G03B21/00; G03B21/54; G03B21/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A UNITARY COMBINED SOUND AND PICTURE-PROJECTION SLIDE COMPRISING A RELATIVELY FLAT RECTANGULAR SUPPORT PLATE CARRYING ON ONE FACE THEREOF A STATIONARY OPEN-SPIRAL SOUND TRACK WHOSE RADIAL WIDTH IS SMALL COMPARED WITH THE OUTER DIAMETER OF SAID TRACK, SAID PLATE HAVING A RECTANGULAR APERTURE DEFINED BY STEPPED-EDGE WALLS AND BEING POSITIONED WHOLLY WITHIN THE INNER DIAMETER OF SAID SOUND TRACK, A RECTANGULAR PROJECTION DIAPOSITIVE HAVING MAJOR DIMENSIONS SLIGHTLY LARGER THAN THOSE OF SAID APERTURE AND BEING POSITIONED IN REGISTERED RELATION TO SAID APERTURE WITHIN THE RECESS PROVIDED BY SAID STEPPED WALLS, FRAME MEANS RECEIVED IN SAID RECESS IN ENGAGEMENT WITH SAID DIAPOSITIVE FOR HOLDING THE LATTER FIXED IN CENTERED POSI-
Claim 2
Dependent Claim
109 words
A UNITARY COMBINED SOUND AND PICTURE-PROJECTION SLIDE COMPRISING A RELATIVELY FLAT RECTANGULAR SUPPORT PLATE CARRYING ON ONE FACE THEREOF A STATIONARY OPEN-SPIRAL SOUND TRACK WHOSE RADIAL WIDTH IS SMALL COMPARED WITH THE OUTER DIAMETER OF SAID TRACK, SAID PLATE HAVING A RECTANGULAR APERTURE DEFINED BY STEPPED-EDGE WALLS AND BEING POSITIONED WHOLLY WITHIN THE INNER DIAMETER OF SAID SOUND TRACK, A RECTANGULAR PROJECTION DIAPOSITIVE HAVING MAJOR DIMENSIONS SLIGHTLY LARGER THAN THOSE OF SAID APERTURE AND BEING POSITIONED IN REGISTERED RELATION TO SAID APERTURE WITHIN THE RECESS PROVIDED BY SAID STEPPED WALLS, FRAME MEANS RECEIVED IN SAID RECESS IN ENGAGEMENT WITH SAID DIAPOSITIVE FOR HOLDING THE LATTER FIXED IN CENTERED POSI-
References Cited (Backward Citations)
US2961922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |