.~ For typing on flat blueprint or drawing (e.g., "platenless" typewriter)
DEFINITION
Classification: 400/29
For typing on flat blueprint or drawing (e.g., "platenless" typewriter):
(under subclass 23) Subject matter wherein significance is attributed to a typewriter in which the record-medium* that is being typed on has length and width dimensions that are substantially greater than the corresponding dimensions of the typewriter, and wherein the typewriter is moved in directions parallel to said dimensions to properly locate the typewriter relative to the record-medium.
(1) Note. The term platenless has been ascribed to such a typewriter because it does not have a platen* ( in the usual sense of the word) connected thereto. Instead, the drawing board or other large, flat surface that ordinarily supports a blueprint or drawing also supports the typewriter, and serves as the platen for this form of typewriter.
