US3348449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic slide projector
Assignee: VOIGLANDER AG
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Filing: 1965-12-17
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Granted: 1967-10-24
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Expires: 1985-12-17
Abstract
No abstract record available.
Inventors
- 👤 Zillmer Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:41
CPC Classifications
B; B02; B02C; B02C2/00; B02C2/10; G; G02; G02B; G02B1/00; G03; G03B; G03B23/00; G03B23/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN A PHOTOGRAPHIC SLIDE PROJECTOR HAVING A PREDETERMINED OPTICAL AXIS, A HOUSING HAVING A SIDE WHERE THE OPERATOR IS NORMALLY LOCATED DURING OPERATION OF THE PROJECTOR, MANUALLY TURNABLE MEANS HAVING A SUBSTANTIALLY HORIZONTAL AXIS DURING USE OF THE PROJECTOR, AND SUBSTANTIALLY HORIZONTAL AXIS BEING INCLINED AT AN ANGLE WITH RESPECT TO THE OPTICAL AXIS SUFFICIENTLY GREAT TO PROVIDE FOR THE SUBSTANTIALLY HORIZONTAL AXIS A DIRECTION EXTENDING TOWARD AN OPERATOR NORMALLY LOCATED AT SAID SIDE OF SAID HOUSING, SO THAT SAID MANUALLY TURNABLE MEANS CAN BE CONVENIENTLY TURNED BY THE OPERATOR, AND SLIDE-CARRIER MEANS CONNECTED WITH SAID MANUALLY TURNABLE MEANS TO BE TURNED THEREBY, FOR REMOVABLY CARRYING A PLURALITY OF SLIDES RESPECTIVELY IN PLANES WHICH MAKE PREDETERMINED ANGLES WITH EACH OTHER AND WHICH ARE RESPECTIVELY SITUATED AT LOCATIONS ANGULARLY DISTRIBUTED ABOUT SAID SUBSTANTIALLY HORIZONTAL AXIS FOR SITUATING ONE SLIDE IN A PROJECTION POSITION EXTENDING PERPENDICULARLY ACROSS THE OPTICAL AXIS
Claim 2
Dependent Claim
148 words
IN A PHOTOGRAPHIC SLIDE PROJECTOR HAVING A PREDETERMINED OPTICAL AXIS, A HOUSING HAVING A SIDE WHERE THE OPERATOR IS NORMALLY LOCATED DURING OPERATION OF THE PROJECTOR, MANUALLY TURNABLE MEANS HAVING A SUBSTANTIALLY HORIZONTAL AXIS DURING USE OF THE PROJECTOR, AND SUBSTANTIALLY HORIZONTAL AXIS BEING INCLINED AT AN ANGLE WITH RESPECT TO THE OPTICAL AXIS SUFFICIENTLY GREAT TO PROVIDE FOR THE SUBSTANTIALLY HORIZONTAL AXIS A DIRECTION EXTENDING TOWARD AN OPERATOR NORMALLY LOCATED AT SAID SIDE OF SAID HOUSING, SO THAT SAID MANUALLY TURNABLE MEANS CAN BE CONVENIENTLY TURNED BY THE OPERATOR, AND SLIDE-CARRIER MEANS CONNECTED WITH SAID MANUALLY TURNABLE MEANS TO BE TURNED THEREBY, FOR REMOVABLY CARRYING A PLURALITY OF SLIDES RESPECTIVELY IN PLANES WHICH MAKE PREDETERMINED ANGLES WITH EACH OTHER AND WHICH ARE RESPECTIVELY SITUATED AT LOCATIONS ANGULARLY DISTRIBUTED ABOUT SAID SUBSTANTIALLY HORIZONTAL AXIS FOR SITUATING ONE SLIDE IN A PROJECTION POSITION EXTENDING PERPENDICULARLY ACROSS THE OPTICAL AXIS
References Cited (Backward Citations)
US488057A
Cited
US3045529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |