Patents by Inventor Anthony L. Zavilenski, Jr.

Anthony L. Zavilenski, 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).

  • Racket string tensioning device
    Patent number: 4721304
    Abstract: A tension adjusting device for rackets. The system allows the player to adjust the tension of a number of strings while in the course of a match. By rotating a device having an offcenter hole and irregular sides the string which through it passes is extended or allowed to contract thereby providing a difference in the play of the racket.
    Type: Grant
    Filed: September 13, 1985
    Date of Patent: January 26, 1988
    Assignee: Anthony L. Zavilenski, Jr.
    Inventor: Anthony L. Zavilenski, Jr.