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Application filed by Jos. Schneider & Co. Optische WerkefiledCriticalJos. Schneider & Co. Optische Werke
Application grantedgrantedCritical
Publication of AT229128BpublicationCriticalpatent/AT229128B/de
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
G03B17/00—Details of cameras or camera bodies; Accessories therefor
G03B17/56—Accessories
G03B17/565—Optical accessories, e.g. converters for close-up photography, tele-convertors, wide-angle convertors