US3284937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide viewer
Assignee: BETTER ENGINEERING Inc
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Filing: 1964-08-10
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Granted: 1966-11-15
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Expires: 1984-08-10
Abstract
No abstract record available.
Inventors
- 👤 John H Weggeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:19
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/04; G03B23/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A SLIDE VIEWER COMPRISING: (A) A TOP HAVING A SLIDEWAY WITH A BOTTOM WALL ADAPTED TO SUPPORT A STACK OF TRANSPARENCY SLIDES AT ONE END THEREOF, (B) A VIEWING STATION BEING PROVIDED AT THE OTHER END OF THE SLIDEWAY, AND (C) MOTOR-DRIVEN MEANS TO PUSH THE BOTTOM SLIDE OF SAID STACK ALONG THE SLIDEWAY TO THE VIEWING STATION AND LEAVE THE SLIDE THUS MOVED, (D) SAID MEANS COMPRISING A MEMBER THAT IS MOVED BY THE MOTOR IN A CLOSED, CONTINUOUSLY CIRCULAR PATH, THE SLIDE BEING ENGAGED AND PUSHED BY SAID MEMBER DURING PART OF SAID MOVEMENT AND THE MEMBER, DURING THE REMAINDER OF ITS MOVEMENT, MOVING TOWARD THE NEXT BOTTOM SLIDE OF THE STACK TO PUSH THE SAME, WHILE THE SLIDE AT THE VIEWING STATION IS AT REST.
Claim 2
Dependent Claim
128 words
A SLIDE VIEWER COMPRISING: (A) A TOP HAVING A SLIDEWAY WITH A BOTTOM WALL ADAPTED TO SUPPORT A STACK OF TRANSPARENCY SLIDES AT ONE END THEREOF, (B) A VIEWING STATION BEING PROVIDED AT THE OTHER END OF THE SLIDEWAY, AND (C) MOTOR-DRIVEN MEANS TO PUSH THE BOTTOM SLIDE OF SAID STACK ALONG THE SLIDEWAY TO THE VIEWING STATION AND LEAVE THE SLIDE THUS MOVED, (D) SAID MEANS COMPRISING A MEMBER THAT IS MOVED BY THE MOTOR IN A CLOSED, CONTINUOUSLY CIRCULAR PATH, THE SLIDE BEING ENGAGED AND PUSHED BY SAID MEMBER DURING PART OF SAID MOVEMENT AND THE MEMBER, DURING THE REMAINDER OF ITS MOVEMENT, MOVING TOWARD THE NEXT BOTTOM SLIDE OF THE STACK TO PUSH THE SAME, WHILE THE SLIDE AT THE VIEWING STATION IS AT REST.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |