US3128684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera data device
Assignee: Kamera und Kinowerke Dresden VEB
•
Filing: 1959-12-28
•
Granted: 1964-04-14
•
Expires: 1979-12-28
Abstract
No abstract record available.
Inventors
- 👤 Trankner Werner
- 👤 Borner Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:36
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A PHOTOGRAPHIC MONOCULAR REFLEX CAMERA HAVING, IN COMBINATION: (A) A HOUSING; (B) A VIEWFINDER ROOF-EDGE PRISM MOUNTED WITHIN THE HOUSING, HAVING A FIRST LIGHT TRANSMITTING SURFACE THROUGH WHICH THE LIGHT RAYS FROM THE OBJECT TO BE PHOTOGRAPHED ENTER THE PRISM, A SECOND LIGHT TRANSMITTING SURFACE THROUGH WHICH THE LIGHT RAYS REFLECTED WITHIN THE PRISM PASS ALONG THE LINE OF SIGHT OF THE OBSERVER, AND A THIRD LIGHT TRANSMITTING SURFACE; (C) EXPOSURE CONDITION INDICATING MEANS ARRANGED IN THE HOUSING; (D) AN IMAGE FIELD LENS LOCATED WITHIN SAID HOUSING ADJACENT THE FIRST LIGHT TRANSMITTING SURFACE; (E) A REFLECTING SURFACE PROVIDED ON SAID PRISM FOR REFLECTING AN IMAGE OF SAID INDICATING MEANS INTO THE LIGHT PATH OF THE VIEWFINDER PRISM; (F) A LIGHT APERTURE IN SAID HOUSING ADJACENT SAID INDICATING MEANS; AND (G) A CONVERGING LENS LOCATED BETWEEN SAID INDICATING MEANS AND SAID THIRD LIGHT TRANSMITTING SURFACE, BUT NOT CONTACTING THE LATTER, FOR TRANSMITTING AN IMAGE OF SAID INDICATING MEANS INTO THE LINE OF SIGHT OF THE OBSERVER BY WAY OF SAID THIRD LIGHT TRANSMITTING SURFACE AND SAID REFLECTING SURFACE.
Claim 2
Dependent Claim
177 words
A PHOTOGRAPHIC MONOCULAR REFLEX CAMERA HAVING, IN COMBINATION: (A) A HOUSING; (B) A VIEWFINDER ROOF-EDGE PRISM MOUNTED WITHIN THE HOUSING, HAVING A FIRST LIGHT TRANSMITTING SURFACE THROUGH WHICH THE LIGHT RAYS FROM THE OBJECT TO BE PHOTOGRAPHED ENTER THE PRISM, A SECOND LIGHT TRANSMITTING SURFACE THROUGH WHICH THE LIGHT RAYS REFLECTED WITHIN THE PRISM PASS ALONG THE LINE OF SIGHT OF THE OBSERVER, AND A THIRD LIGHT TRANSMITTING SURFACE; (C) EXPOSURE CONDITION INDICATING MEANS ARRANGED IN THE HOUSING; (D) AN IMAGE FIELD LENS LOCATED WITHIN SAID HOUSING ADJACENT THE FIRST LIGHT TRANSMITTING SURFACE; (E) A REFLECTING SURFACE PROVIDED ON SAID PRISM FOR REFLECTING AN IMAGE OF SAID INDICATING MEANS INTO THE LIGHT PATH OF THE VIEWFINDER PRISM; (F) A LIGHT APERTURE IN SAID HOUSING ADJACENT SAID INDICATING MEANS; AND (G) A CONVERGING LENS LOCATED BETWEEN SAID INDICATING MEANS AND SAID THIRD LIGHT TRANSMITTING SURFACE, BUT NOT CONTACTING THE LATTER, FOR TRANSMITTING AN IMAGE OF SAID INDICATING MEANS INTO THE LINE OF SIGHT OF THE OBSERVER BY WAY OF SAID THIRD LIGHT TRANSMITTING SURFACE AND SAID REFLECTING SURFACE.
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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |