US PATENT SUBCLASS 108 / 2
.~ Biased

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

1  DF  TILTABLE SURFACES {5}
2.~ Biased

DEFINITION

Classification: 108/2

(under subclass 1) Device provided with means to urge the supporting surface about its tilt axis.