US PATENT SUBCLASS 164 / 400
.~ Collapsible or knock down type core bar

Current as of: June, 1999
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164 /   HD   METAL FOUNDING

397  DF  CORE CENTERING OR SUPPORTING MEANS {2}
400.~ Collapsible or knock down type core bar

DEFINITION

Classification: 164/400

(under subclass 397) Apparatus wherein the core supporting means is intended to extend inside the core and is constructed to allow a break down or reduction in volume of the means.