(under subclass 18) Subject matter including a sheet which is adapted to render an image of an object which is projected thereon visible for the purpose of photographing the image on the sheet, previewing the image on the sheet which is identical to one that will be projected on a photosensitive paper, or focusing the optical system.
SEE OR SEARCH CLASS
352, Optics: Motion Pictures, especially
133, for similar structure where either a motion picture projector or a motion picture camera is employed.
399, Electrophotography, subject matter under
158, for electrophotographing devices with reproduced image projection or display of developed image.
