US3264937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide projection system
Assignee: Individual
•
Filing: 1962-11-09
•
Granted: 1966-08-09
•
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 12:54
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.
References Cited (Backward Citations)
US450815A
Cited
US947471A
Cited
US1365752A
Cited
US1738943A
Cited
US2259651A
Cited
US2530417A
Cited
US2655833A
Cited
US2705439A
Cited
US2922335A
Cited
US2942365A
Cited
US2973689A
Cited
US3014296A
Cited
US3033077A
Cited
US3093030A
Cited
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 |