Patents Assigned to Yamato Plastics Machinery Co., Ltd.
  • Method of producing ventilator grills
    Patent number: 4414170
    Abstract: A method of producing a ventilator grill (A) comprising a grill frame (B) and louver vanes (E) pivotally mounted thereon utilizes first, second and third mould halves.
    Type: Grant
    Filed: April 6, 1982
    Date of Patent: November 8, 1983
    Assignees: Nihon Plast Co., Ltd., Yamato Plastics Machinery Co., Ltd.
    Inventor: Yoshiaki Sano