US3560088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible reap-screen projection theatre
Assignee: MOTIVA Ltd
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Filing: 1969-05-20
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Granted: 1971-02-02
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Expires: 1989-05-20
Abstract
Abstract A COLLAPSIBLE REAR-SCREEN PROJECTION THEATRE FOR SUCCESSIVELY PRESENTING THE IMAGES OF FILM SLIDES CONTAINED IN A STANDARD SLIDE PROJECTOR. THE PROJECTOR IS INSTALLED IN A BOX-LIKE CARRYING CASE AT AN OPTICAL POSITION TO DIRECT A SLIDE IMAGE ONTO A FIRST MIRROR SECURED TO THE INCLINED FRONT WALL OF THE CASE. MOUNTED ABOVE AN OPENING IN THE TOP OF THE CASE IS A FOLDABLE SCREEN ASSEMBLY HAVING A SECOND MIRROR SECURED TO AN INCLINED REAR PANEL THEREOF, SUCH THAT WHEN THE ASSEMBLY IS IN THE ERECT STATE, THE SLIDE IMAGE IS REFLECTED BY THE FIRST MIRROR THROUGH THE OPENING ONTO THE SECOND MIRROR WHICH, IN TURN, DIRECTS THE IMAGE ONTO THE REAR OF A TRANSLUCENT SCREEN.
Inventors
- 👤 Robert C Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:51
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |