U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

A system of eyewear that eliminates the need for hinges on the frames of the eyewear.

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Inventor: Akimitsu Hiraki

Address: Chita-gun, JP
No. of patents: 1
Last patent issue date: 08/29/2000

Number	Title	Issue Date
6109156	Punching apparatus and punch A drilling jig has a pyramidal tip, a cylindrical portion, and a proximal end. The pyramidal tip is formed like a polygonal pyramid and each pyramidal face is provided with a concave. The cylindrical portion connecting with the pyramidal tip is formed lik...	08/29/2000