DIFF Subgroup
G02B 27/04 having collapsible parts
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Optical systems or apparatus not provided for by any of the groups , > Viewing or reading apparatus > having collapsible parts
CPC:
Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 > Viewing or reading apparatus (stereoscopic systems G02B30/00) > having collapsible parts
No child classifications to compare. This is a leaf node in both IPC and CPC.