CPC Subgroup
G03B 13/02 Viewfinders
Full Title
Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras > Viewfinders
4 direct subcodes
Child Classifications
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- G03B 13/04 of direct vision type, e.g. frame, sighting mark
- G03B 13/06 with lenses with or without reflectors
- G03B 13/10 adjusting viewfinders field
- G03B 13/16 combined with focusing aids