DIFF Subgroup
G02B 9/08 arranged about a stop
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – > having two components only > two + components > arranged about a stop
CPC:
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - (G02B15/00 takes precedence) > having two components only > two + components > arranged about a stop
No child classifications to compare. This is a leaf node in both IPC and CPC.