DIFF Subgroup
G01D 15/04 acting to punch holes in the recording surface
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Component parts of recorders for measuring arrangements not specially adapted for a specific variable > Styli or other recording elements acting to mechanically deform or perforate the recording surface > acting to punch holes in the recording surface
CPC:
Component parts of recorders for measuring arrangements not specially adapted for a specific variable > Styli or other recording elements acting to mechanically deform or perforate the recording surface (printing recording elements G01D15/20) > acting to punch holes in the recording surface
No child classifications to compare. This is a leaf node in both IPC and CPC.