US3209647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide projector using a box or circular slide magazine
Assignee: View Master International Group
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Filing: 1963-03-01
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Granted: 1965-10-05
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Expires: 1983-03-01
Abstract
No abstract record available.
Inventors
- 👤 Walter J Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:12
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
140 words
IN A SLIDE PROJECTOR, OF THE TYPE CHARACTERIZED BY A HOUSING HAVING AN EXTERIOR, LONGITUDINALLY EXTENDING, OPEN TOP, SLIDE TRAY RECEIVING GROOVE AND A TRANSVERSELY EXTENDING SLIDE-RECEIVING SLOT COMMUNICATING WITH THE GROOVE, WHICH GROOVE IS ADAPTED TO RECEIVE AN ELONGATED BOX-LIKE SLIDE TRAY, THE CONSTRUCTION FOR SUPPORTING A CIRCULAR SLIDE TRAY IN SAID GROOVE WITH THE PRINCIPAL AXIS OF THE TRAY EXTENDING GENERALLY PERPENDICULAR WITH SAID GROOVE AND ABOVE THE SAME, WHICH TRAY INCLUDES A PLURALITY OF RADIALLY ARRANGED SLIDE RECEIVING SPACES OPENING AXIALLY OF THE TRAY AT A COMMON FACE THEREOF, SAID CONSTRUCTIONU INCLUDING MEANS MOUNTED ADJACENT EACH SIDE OF SAID GROOVE AND ADAPTED TO ENGAGE THE CIRCULAR SLIDE TRAY FOR PERMITTING OPERATIVE ROTATION OF THE SAME ABOUT SAID AXIS WHILE SUPPORTING THE LATTER IN THE GROOVE FOR ONE AT A TIME REGISTRATION OF SAID SPACES WITH SAID SLOT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |