Photo-chromic material application apparatus

Illumination – With implement or hand held holder therefor – Pen or pencil

Reexamination Certificate

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Details

C446S219000

Reexamination Certificate

active

07547109

ABSTRACT:
In one embodiment of the invention, photo-chromic applicators are disclosed. The photo-chromic applicator may include a liquid photo-chromic material such as a photo-chromic ink or paint. The photo-chromic material is applied to a surface of a toy, a page, or other object by a child user. The photo-chromic material may be activated in various ways with various light activating devices that can generate the activating light with appropriate wavelengths.

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