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B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
B41L11/00—Apparatus for directly duplicating from hectographic masters in mirror image, i.e. "wet duplicators" for producing positive copies
Rotary duplicator for the reproduction, by lines or by indentations, of reverse writing printing plates, in list form, on single sheets or similar media
Method and rotary duplicator for reproducing by lines, on sheets, cards or the like, in a close or contiguous arrangement, distant texts taken on one or more printing plates