US PATENT SUBCLASS 108 / 106
.~ Vertically adjustable

Current as of: June, 1999
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108 /   HD   HORIZONTALLY SUPPORTED PLANAR SURFACES

59  DF  PLURAL RELATED HORIZONTAL SURFACES {11}
106.~ Vertically adjustable {1}
107  DF  .~.~> Removably mountable in plural positions {2}

DEFINITION

Classification: 108/106

(under subclass 59) Device wherein at least one of the surfaces may be selectively positioned upwardly or downwardly.