Patents Assigned to Sanken Steel Co., Ltd.
  • Curb and drain unit
    Patent number: D242622
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: December 7, 1976
    Assignee: Sanken Steel Co., Ltd.
    Inventor: Sinzo Ito
  • Curb and drain unit
    Patent number: D242623
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: December 7, 1976
    Assignee: Sanken Steel Co., Ltd.
    Inventor: Sinzo Ito
  • Curb and drain unit
    Patent number: D243094
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: January 18, 1977
    Assignee: Sanken Steel Co. Ltd.
    Inventor: Sinzo Ito
  • Soundproof wall unit
    Patent number: D410291
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: May 25, 1999
    Assignee: Sanken Steel Co., Ltd.
    Inventor: Shinzo Ito