US PATENT SUBCLASS 355 / 77
.~ Methods


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355 /   HD   PHOTOCOPYING

18  DF  PROJECTION PRINTING AND COPYING CAMERAS {27}
77.~ Methods


DEFINITION

Classification: 355/77

(under subclass 18) Subject matter including process steps for use in projecting an image of the subject matter on an original sheet or film strip onto a photosensitive paper to make a copy of the original.

SEE OR SEARCH THIS CLASS, SUBCLASS:

132, for contact printing methods in general.

SEE OR SEARCH CLASS

353, Optics: Image Projectors,

121, for a method of projecting an image on a viewing screen.

399, Electrophotography, subject matter under 130+, for methods of forming images electrophotos:graphically.