US PATENT SUBCLASS 281 / 19.2
.~.~ Loop engaging

Current as of: June, 1999
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281 /   HD   BOOKS, STRIPS, AND LEAVES

15.1  DF  BOOK, ELEMENT THEREOF, OR ACCESSORY THEREFOR {9}
19.1  DF  .~ Removable cover {1}
19.2.~.~ Loop engaging

DEFINITION

Classification: 281/19.2

Loop engaging:

(under subclass 19.1) A book including at least one structure which is or which resembles a closed or substantially closed ring, coil, or any other closed or substantially closed loop by which the body of the book may be releasably secured to the cover.