Patents by Inventor Wang C. S. Mei

Wang C. S. Mei has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electrical steel seal printing device
    Patent number: 5127320
    Abstract: An electrically operated steel seal printing device wherein the relative angle of the mold halves and the distance between the mold halves are adjustable.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: July 7, 1992
    Inventor: Wang C. S. Mei