US PATENT SUBCLASS 188 / 228.1
.~.~.~ Tubular compression member

Current as of: June, 1999
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188 /   HD   BRAKES

*  DD  ELEMENTS {6}
219.1  DF  .~ Beams or beam assemblies {6}
225.6  DF  .~.~ Trussed beam {4}
228.1.~.~.~ Tubular compression member

DEFINITION

Classification: 188/228.1

(under subclass 225.6) Devices wherein the compression member of the beam is of hollow form.