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System for magnetically attaching templeless eyewear to a person
A system of eyewear that eliminates the need for hinges on the frames of the eyewear.
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| Number | Title | Issue Date |
| 6102104 | Die-cushion oil pressure locking device A die-cushion oil pressure locking device is composed of a locking cylinder which couples with the operation of the die-cushion device can be prevented the wrinkling when the mold products is processed, and an operating cylinder controls oil which is used... | 08/15/2000 |
