US PATENT SUBCLASS 138 / 106
.~ With external support structure

Current as of: June, 1999
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138 /   HD   PIPES AND TUBULAR CONDUITS

103  DF  COMBINED {6}
106.~ With external support structure {1}
107  DF  .~.~> Suspended

DEFINITION

Classification: 138/106

(under subclass 103) Device including means externally of the pipe for supporting same.

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111+, for one pipe supported within another pipe or a casing, by a means external of said one pipe so as to form plural ducts.

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248, Supports,

80+, for a stand for supporting pipe.