Patent US3264937A successfully refreshed from Google Patents.
US3264937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide projection system
Assignee: Individual
•
Filing: 1962-11-09
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Granted: 1966-08-09
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Expires: 1982-11-09
Abstract
No abstract record available.
Inventors
- 👤 Antos Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:01
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN AN AUTOMATIC SLIDE PROJECTOR, THE COMBINATION COMPRISING, A PAIR OF SPACED OPTICAL SYSTEMS, A SLIDE SUPPORTING HOPPER ADAPTED TO RECEIVE A STACK OF SLIDES, MEANS FOR FEEDING ALTERNATE ONES OF THE SLIDES POSITIONED IN SAID HOPPER SERIATIM INTO DIFFERENT ONES OF SAID OPTICAL SYSTEMS FOR IMAGE PROJECTION THEREFROM, A COMMON DISCHARGE STATION, AND MEANS FOR TRANSFERRING THE SLIDES POSITIONED IN SAID TWIN OPTICAL SYSTEMS TO SAID DISCHARGE STATION SERIATIM IN THE SAME ORDER AS SUCH SLIDES ARE FED FROM SAID HOPPER.
Claim 2
Dependent Claim
82 words
IN AN AUTOMATIC SLIDE PROJECTOR, THE COMBINATION COMPRISING, A PAIR OF SPACED OPTICAL SYSTEMS, A SLIDE SUPPORTING HOPPER ADAPTED TO RECEIVE A STACK OF SLIDES, MEANS FOR FEEDING ALTERNATE ONES OF THE SLIDES POSITIONED IN SAID HOPPER SERIATIM INTO DIFFERENT ONES OF SAID OPTICAL SYSTEMS FOR IMAGE PROJECTION THEREFROM, A COMMON DISCHARGE STATION, AND MEANS FOR TRANSFERRING THE SLIDES POSITIONED IN SAID TWIN OPTICAL SYSTEMS TO SAID DISCHARGE STATION SERIATIM IN THE SAME ORDER AS SUCH SLIDES ARE FED FROM SAID HOPPER.
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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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |