DIFF Subgroup
G03B 13/20 Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera
Introduced: September 1968
Full Title
Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras > Focusing aids > Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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- G03B 13/22 coupling providing for compensation upon change of camera lens IPC+CPC Available in IPC and CPC