DIFF Subgroup
G09B 23/02 for mathematics (for statics or dynamics G09B23/08)
Introduced: September 1968
Title
Titles differ between systems:
IPC: for mathematics
CPC: for mathematics (for statics or dynamics G09B23/08)
Full Title
Full titles differ between systems:
IPC:
Models for scientific, medical, or mathematical purposes, e.g. full-sized device for demonstration purposes > for mathematics
CPC:
Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes (in the nature of toys A63H) > for mathematics (for statics or dynamics G09B23/08)
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G09B 23/04 for geometry, trigonometry, projection or perspective (for surveying G09B25/06) IPC+CPC Available in IPC and CPC