Patents Assigned to Young Optical Co., Ltd.
  • Opera glasses
    Patent number: D305902
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: February 6, 1990
    Assignee: Young Optical Co., Ltd.
    Inventors: Shoji Wakayama, Akio Akiyama
  • Folding binoculars
    Patent number: D330037
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: October 6, 1992
    Assignee: Young Optical Co., Ltd.
    Inventors: Shouji Wakayama, Akio Akiyama
  • Binoculars
    Patent number: D350146
    Type: Grant
    Filed: March 17, 1992
    Date of Patent: August 30, 1994
    Assignee: Young Optical Co., Ltd.
    Inventors: Shouji Wakayama, Akio Akiyama