US PATENT SUBCLASS 283 / 42
.~ Book

Current as of: June, 1999
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283 /   HD   PRINTED MATTER

36  DF  INDEXED {4}
42.~ Book {1}
43  DF  .~.~> Multiple

DEFINITION

Classification: 283/42

Each invention involving a book.

SEE OR SEARCH THIS CLASS, SUBCLASS:

38, and 40.