US PATENT SUBCLASS 211 / 42
.~ Book support type

Current as of: June, 1999
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211 /   HD   SUPPORTS: RACKS

13.1  DF  SPECIAL ARTICLE {32}
42.~ Book support type {1}
43  DF  .~.~> Adjustable

DEFINITION

Classification: 211/42

(under subclass 13.1) Devices designed to laterally support a closed book, usually stood on end.