Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Interfot Ges Stratmann & Co
Original Assignee
Interfot Ges Stratmann & Co
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Filing date
Publication date
Application filed by Interfot Ges Stratmann & CofiledCriticalInterfot Ges Stratmann & Co
Application grantedgrantedCritical
Publication of FR895152ApublicationCriticalpatent/FR895152A/fr
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B27/00—Photographic printing apparatus
G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
G03B27/34—Means for automatic focusing therefor
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR895152D1942-06-221943-06-01Appareil de reproduction à mise au point automatique ou semi- automatique
ExpiredFR895152A
(fr)