US PATENT SUBCLASS 108 / 142
.~.~ With means to limit or inhibit rotation

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

137  DF  HORIZONTALLY ADJUSTABLE {3}
139  DF  .~ Rotates about vertical axis {3}
142.~.~ With means to limit or inhibit rotation

DEFINITION

Classification: 108/142

(under subclass 139) Device wherein means are provided to selectively prevent or resist the rotation of the surface.