DIFF Subgroup
G02B 13/24 for reproducing or copying at short object distances
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Optical objectives specially designed for the purposes specified below > for reproducing or copying at short object distances
CPC:
Optical objectives specially designed for the purposes specified below (with variable magnification G02B15/00) > for reproducing or copying at short object distances
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
Navigate with arrow keys, Enter to open