Patents Assigned to Martin Miller Aktiengesellschaft
  • Method of manufacturing a one-sided or two-sided punching knife for non-metallic materials
    Patent number: 4938105
    Abstract: A method for fabrication of a one-sided or two-sided punching knife (1) for non-metallic materials such as leather, textiles, paper, etc. with a groove (4) lying on the inside and reinforcing plate (3) engaging into the groove. The reinforcing plate (3) is of non-metallic material and is stamped out by the knife (1) which it is intended to reinforce.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: July 3, 1990
    Assignee: Martin Miller Aktiengesellschaft
    Inventor: Leopold Boswarth