US PATENT SUBCLASS 281 / 38
.~ Leaves

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}
38.~ Leaves {3}
39  DF  .~.~> Erasable surface
40  DF  .~.~> Flat opening {1}
42  DF  .~.~> Book-leaf holders and marks

DEFINITION

Classification: 281/38

Inventions pertaining to the sheet elements of the bodies of books.

SEE OR SEARCH THIS CLASS, SUBCLASS:

18, for leaves which are sealed.

SEE OR SEARCH CLASS

283, Printed Matter, compare with this class (281) for leaves bearing printed matter.