US PATENT SUBCLASS 108 / 147.19
.~ By telescoping

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

144.11  DF  VERTICALLY ADJUSTABLE {8}
147.19.~ By telescoping {2}
147.2  DD  .~.~> And pivoting
147.21  DF  .~.~> Including fastening means passing through registered openings

DEFINITION

Classification: 108/147.19

By telescoping:

(under subclass 144.11) Device wherein the support structure includes two elongated hollow tubes adapted to slide one within another; and wherein the support surface is vertically adjusted by sliding one tube relative to the other.