Patents by Inventor John Rewolinski

John Rewolinski 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).

  • Weighted practice bat
    Patent number: 5277421
    Abstract: An elongated baseball bat includes an integral handle and barrel portion and a separate end portion that is threadedly attached to the barrel portion by means of a threaded stem that extends from the barrel portion. A plurality of cylindrical weights are slidably mounted over the threaded stem and are disposed within an axial cavity in the end portion as the end portion is rotated onto the threaded stem.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: January 11, 1994
    Inventor: John Rewolinski