US PATENT SUBCLASS 242 / 472.7
.~ On planar form (e.g., card, board)


Current as of: June, 1999
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242 /   HD   WINDING, TENSIONING, OR GUIDING

470  DF  HELICAL OR RANDOM WINDING OF MATERIAL {17}
472.7.~ On planar form (e.g., card, board)


DEFINITION

Classification: 242/472.7

On planar form (e.g., card, board):

(under subclass 470) Subject matter wherein the take-up is a structure having two parallel substantially planar external surfaces making up a substantial portion of the surface of the take-up and being closely spaced relative to their overall dimensions.