Patents by Inventor John A. Yurkunas, Jr.

John A. Yurkunas, Jr. 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).

  • Unitary adaptor for presser foot attachment
    Patent number: 3967567
    Abstract: Adaptor which fits in operative position onto a presser foot attachment of sewing machines. The adaptor has spaced resilient post members for clampingly engaging the presser foot and has on its undersurface laterally spaced parallel grooves, each having at least one inclined surface for vertically orienting a zipper coupling chain moved relative to the adaptor in the groove.
    Type: Grant
    Filed: March 7, 1975
    Date of Patent: July 6, 1976
    Assignee: Wm. E. Wright Co.
    Inventors: John A. Yurkunas, Jr., Rhea C. Lathe