US3552846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide stack handling system for projectors
Assignee: Eastman Kodak Co
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Filing: 1968-05-01
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Granted: 1971-01-05
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Expires: 1988-05-01
Abstract
Abstract A SLIDE STACK HANDLING SYSTEM FOR SLIDE PROJECTORS COMPRISING A SLIDE HOLDER FOR RELEASABLY HOLDING A STACK OF SLIDES AND COOPERATING WITH STRUCTURE ON THE PROJECTOR TO RELEASE THE SLIDES WHEN THE SLIDE HOLDER IS MOVED TO A SLIDE RELEASING POSITION IN THE SUPPLY CHAMBER OF THE PROJECTOR. AFTER ALL OF THE SLIDES HAVE BEEN PROJECTED, THE SLIDE HOLDER IS MOVABLE TO A SLIDE GRIPPING POSITION IN THE SLIDE TAKE-UP CHAMBER FOR GRIPPING THE STACK OF SLIDES AND FOR REMOVAL OF THE SLIDE HOLDER FROM THE PROJECTOR. THE REMOVED SLIDE HOLDER SERVES AS A COVER FOR A RECEPTACLE TO PROVIDE SLIDE STORAGE.
Inventors
- 👤 David E Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:32
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/04; G03B21/00; G03B21/54
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |