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PCE
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DIFF Subgroup
G09B 23/12

of liquids or gases

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Models for scientific, medical, or mathematical purposes, e.g. full-sized device for demonstration purposes > for physics > for statics or dynamics > of liquids or gases

CPC:

Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes (in the nature of toys A63H) > for physics > for statics or dynamics > of liquids or gases

No child classifications to compare. This is a leaf node in both IPC and CPC.