US PATENT SUBCLASS 92 / 214
.~.~ Spaced wall skirt

Current as of: June, 1999
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92 /   HD   EXPANSIBLE CHAMBER DEVICES

172  DF  PISTON {19}
208  DF  .~ Open-ended hollow skirt type (e.g., trunk type) {15}
214.~.~ Spaced wall skirt

DEFINITION

Classification: 92/214

(under subclass 208) Apparatus in which the skirt-like member is formed at a portion thereof extending for the full perimetric extent thereof with a pair of walls which are spaced from each other.