US PATENT SUBCLASS 92 / 258
.~.~.~ Rigid members connected by coaxial rigid stem or rod
Current as of:
June, 1999
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EXPANSIBLE CHAMBER DEVICES
172
DF
PISTON
{19}
255
DF
.~ Plural separable parts {3}
257
DF
.~.~ Side wall portion interposed between separable axially spaced rigid members {1}
258
.~.~.~ Rigid members connected by coaxial rigid stem or rod
DEFINITION
Classification: 92/258
(under subclass 257) Apparatus in which the means for
detachably securing the members together comprises a rigid elongated stem or rod, the axis of which coincides with the axis of the members.