Patent US3170159A successfully refreshed from Google Patents.
US3170159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motion picture camera
Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1962-01-02
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Granted: 1965-02-16
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Willi
- 👤 Brohl August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:10
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/18; G03B7/00; G03B7/08; G03B7/099; G03B7/0993; G03B7/0997; G03B7/09971; G03B7/09976
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A MOTION PICTURE CAMERA COMPRISING AN OBJECTIVE LENS HAVING FRONT AND REAR LENSES IN SPACED RELATION AND AN OBJECTIVE DIAPHRAGM POSITIONED IN SAID SPACE, A REFLEX VIEW-FINDER, OPTICAL MEANS BETWEEN SAID OBJECTIVE LENS AND SAID DIAPHRAGM FOR REFLECTING A PORTION OF THE LIGHT RAYS ENTERING SAID OBJECTIVE ONTO SAID VIEW-FINGER AND PASSING THE REMAINDER OF SAID LIGHT RAYS THROUGH SAID DIAPHRAGM, A ROTATING SHUTTER POSITIONED AFTER SAID DIAPHRAGM AND BEHIND THE REAR LENS OF THE OBJECTIVE AND HAVING A CUT-OUT PORTION THEREIN TO PERMIT THE INTERMITTENT PASSAGE OF LIGHT RAYS ONTO A FILM, THERE BEING A REFLECTING SURFACE ON THE SURFACE OF SAID SHUTTER FACING TOWARDS SAID OBJECTIVE, AN EXPOSURE METER HAVING A PHOTOELECTRIC CELL, AND MEANS ON SAID OPTICAL MEANS FOR RECEIVING ALL OF THE LIGHT REFLECTED FROM SAID SHUTTER AND REFLECTING ALL OF THIS LIGHT TO SAID PHOTOELECTRIC CELL.
Claim 2
Dependent Claim
141 words
A MOTION PICTURE CAMERA COMPRISING AN OBJECTIVE LENS HAVING FRONT AND REAR LENSES IN SPACED RELATION AND AN OBJECTIVE DIAPHRAGM POSITIONED IN SAID SPACE, A REFLEX VIEW-FINDER, OPTICAL MEANS BETWEEN SAID OBJECTIVE LENS AND SAID DIAPHRAGM FOR REFLECTING A PORTION OF THE LIGHT RAYS ENTERING SAID OBJECTIVE ONTO SAID VIEW-FINGER AND PASSING THE REMAINDER OF SAID LIGHT RAYS THROUGH SAID DIAPHRAGM, A ROTATING SHUTTER POSITIONED AFTER SAID DIAPHRAGM AND BEHIND THE REAR LENS OF THE OBJECTIVE AND HAVING A CUT-OUT PORTION THEREIN TO PERMIT THE INTERMITTENT PASSAGE OF LIGHT RAYS ONTO A FILM, THERE BEING A REFLECTING SURFACE ON THE SURFACE OF SAID SHUTTER FACING TOWARDS SAID OBJECTIVE, AN EXPOSURE METER HAVING A PHOTOELECTRIC CELL, AND MEANS ON SAID OPTICAL MEANS FOR RECEIVING ALL OF THE LIGHT REFLECTED FROM SAID SHUTTER AND REFLECTING ALL OF THIS LIGHT TO SAID PHOTOELECTRIC CELL.
References Cited (Backward Citations)
US1934484A
Cited
GB784014A
Cited
US2817238A
Cited
FR1199116A
Cited
US3127809A
Cited
US3060823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |