US3107269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Range finder device for photographic cameras
Assignee: Carl Zeiss AG
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Filing: 1962-05-23
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Granted: 1963-10-15
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Expires: 1982-05-23
Abstract
No abstract record available.
Inventors
- 👤 Sauer Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:23
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/18; G03B13/24; G03B13/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A PHOTOGRAPHIC CAMERA, THE COMBINATION WITH A PHOTOGRAPHIC OBJECTIVE OF A COMBINED VIEW FINDER HAVING A RECTANGULAR VIEWING AREA AND RANGE FINDER DEVICE ARRANGED TO RECEIVE A PORTION OF THE LIGHT RAYS PASSING THROUGH SAID OBJECTIVE, SAID RANGE FINDER COMPRISING A DOUBLE WEDGE SHARPNESS INDICATOR CONSISTING OF TWO WEDGES EACH OF WHICH COVERS ONE HALF OF SAID RECTANGULAR VIEW FINDER AREA, THE THIN PORTIONS OF SAID WEDGES ABUTTING EACH OTHER ALONG A COMMON PLANE EXTENDING IN A STRAIGHT LINE ACROSS SAID ENTIRE VIEW FINDER AREA, SAID TWO THIN PORTIONS HAVING DIFFERENT THICKNESSES ALONG THEIR ABUTTING FACES.
Claim 2
Dependent Claim
97 words
IN A PHOTOGRAPHIC CAMERA, THE COMBINATION WITH A PHOTOGRAPHIC OBJECTIVE OF A COMBINED VIEW FINDER HAVING A RECTANGULAR VIEWING AREA AND RANGE FINDER DEVICE ARRANGED TO RECEIVE A PORTION OF THE LIGHT RAYS PASSING THROUGH SAID OBJECTIVE, SAID RANGE FINDER COMPRISING A DOUBLE WEDGE SHARPNESS INDICATOR CONSISTING OF TWO WEDGES EACH OF WHICH COVERS ONE HALF OF SAID RECTANGULAR VIEW FINDER AREA, THE THIN PORTIONS OF SAID WEDGES ABUTTING EACH OTHER ALONG A COMMON PLANE EXTENDING IN A STRAIGHT LINE ACROSS SAID ENTIRE VIEW FINDER AREA, SAID TWO THIN PORTIONS HAVING DIFFERENT THICKNESSES ALONG THEIR ABUTTING FACES.
References Cited (Backward Citations)
US2669916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |