DIFF Subgroup
C09D 11/18 specially adapted for ball-point writing instruments
Introduced: September 1968
Title
Titles differ between systems:
IPC: for use in ball-point writing instruments
CPC: specially adapted for ball-point writing instruments
Full Title
Full titles differ between systems:
IPC:
Inks > Writing inks > for use in ball-point writing instruments
CPC:
Inks > Writing inks > specially adapted for ball-point writing instruments
No child classifications to compare. This is a leaf node in both IPC and CPC.