Clip on sunshade for eyeglasses

Clip-on flip-up magnified lens

Clip-on housing and support for a magnifier lens

Clip-on sunglasses or similar article

Clip-on sunglasses or similar article

Close-up lens

Collapsible hand-held periscope

Collapsible viewing instrument

Collimating magnifier

Color proofing viewer

Combination binoculars and camera

Combination binoculars and camera

Combination of a stand and an assembly connected thereto of...

Combination teleido scope and baseball

Combination telescope and microscope

Combination vial, tray, and case for contact lenses

Combined applicator and remover for a contact lens

Combined armrests and microscope stand

Combined beam splitter and optical coupler for connecting a ligh

Combined binoculars and compass