US3174416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monocular mirror reflex camera
Assignee: Kamera und Kinowerke Dresden VEB
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Filing: 1961-05-04
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Granted: 1965-03-23
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Expires: 1981-05-04
Abstract
No abstract record available.
Inventors
- 👤 Heerklotz Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:59
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A CARMERA HAVING AN APERTURED DIAPHRAGM, DIAPHRAGM SETTING MEANS, A VIEWER, A DISTANCE SCALE VISIBLE IN THE FIELD OF VIEW OF THE VIEWER, A PAIR OF INDICATORS VISIBLE IN SAID FELD OF VIEW ADJACENT SAID SCALE, AND MEANS FOR MOVING THE IMAGE OF SAID INDICATORS TOWARD OR AWAY FROM EACH OTHER ALONG SAID SCALE IN SAID FIELD OF VIEW, THE LAST-NAMED MEANS COMPRISING A SPINDLE HAVING A PAIR OF SCREW-THREADED PORTIONS OF OPPOSITE HAND WITH EACH OF WHICH ONEOF SAID INDICATORS IS IN SCREW-THREADED ENGAGEMENT, AND MEANS FOR ROTATING SAID SPINDLE BY OPERATION OF SAID SETTING MEANS.
Claim 2
Dependent Claim
97 words
A CARMERA HAVING AN APERTURED DIAPHRAGM, DIAPHRAGM SETTING MEANS, A VIEWER, A DISTANCE SCALE VISIBLE IN THE FIELD OF VIEW OF THE VIEWER, A PAIR OF INDICATORS VISIBLE IN SAID FELD OF VIEW ADJACENT SAID SCALE, AND MEANS FOR MOVING THE IMAGE OF SAID INDICATORS TOWARD OR AWAY FROM EACH OTHER ALONG SAID SCALE IN SAID FIELD OF VIEW, THE LAST-NAMED MEANS COMPRISING A SPINDLE HAVING A PAIR OF SCREW-THREADED PORTIONS OF OPPOSITE HAND WITH EACH OF WHICH ONEOF SAID INDICATORS IS IN SCREW-THREADED ENGAGEMENT, AND MEANS FOR ROTATING SAID SPINDLE BY OPERATION OF SAID SETTING MEANS.
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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |