Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5793463 | Universal attachment with moveable sideshields for eyeglasses | Richard Hirschman, Ji Woong Kim, Jae Bong Sim | 1998-08-11 |
| 5623322 | Pull down member on temple of eyeglasses | Jason Hirschman, Chul-Woo Shin, Ji Woong Kim | 1997-04-22 |