US3218922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic projector with jam lock mechanism
Assignee: Rollei of America Inc
•
Filing: 1963-03-28
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Granted: 1965-11-23
•
Expires: 1983-03-28
Abstract
No abstract record available.
Inventors
- 👤 Jr John P Mahoney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:09
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/04; G03B23/048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A PHOTOGRAPHIC PROJECTOR OF THE TYPE UTILIZING A SLIDE STORAGE TRAY HOLDING A PLURALITY OF INDIVIDUAL SLIDES ADAPTED TO BE MOVED AT ONE AT A TIME TO A PROJECTION COMPARTMENT AND TO BE DISPLAYED ON A SCREEN OR THE LIKE, SLIDE CHANGING MEANS INCLUDING LOST MOTION MEANS EFFECTIVE TO MOVE THE SLIDES BETWEEN THE TRAY AND THE PROJECTION COMPARTMENT, SLIDE TRAY INDEXING MEANS EFFECTIVE TO MOVE THE TRAY IN STEP BY STEP FASHION, MEANS CONTROLLED BY SAID SLIDE CHANGING MEANS, BY VIRTURE OF SAID LOST MOTION MEANS TO ACTUATE SAID SLIDE
Claim 2
Dependent Claim
92 words
IN A PHOTOGRAPHIC PROJECTOR OF THE TYPE UTILIZING A SLIDE STORAGE TRAY HOLDING A PLURALITY OF INDIVIDUAL SLIDES ADAPTED TO BE MOVED AT ONE AT A TIME TO A PROJECTION COMPARTMENT AND TO BE DISPLAYED ON A SCREEN OR THE LIKE, SLIDE CHANGING MEANS INCLUDING LOST MOTION MEANS EFFECTIVE TO MOVE THE SLIDES BETWEEN THE TRAY AND THE PROJECTION COMPARTMENT, SLIDE TRAY INDEXING MEANS EFFECTIVE TO MOVE THE TRAY IN STEP BY STEP FASHION, MEANS CONTROLLED BY SAID SLIDE CHANGING MEANS, BY VIRTURE OF SAID LOST MOTION MEANS TO ACTUATE SAID SLIDE
References Cited (Backward Citations)
US3053146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |