US PATENT SUBCLASS 412 / 30
.~.~ Backing means

Current as of: June, 1999
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412 /   HD   BOOKBINDING: PROCESS AND APPARATUS

9  DF  APPARATUS {10}
25  DF  .~ Book working apparatus {6}
30.~.~ Backing means

DEFINITION

Classification: 412/30

Backing(*) means:

(under subclass 25) Apparatus for performing a backing(*) operation.