Patents by Inventor Mariano P. Diforte, Jr.

Mariano P. Diforte, 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).

  • Weighting device for attachment to baseball bats
    Patent number: 3971559
    Abstract: This invention is a weighting device for attachment to baseball bats which is of generally doughnut shape, and comprising a hollow chamber adapted to be filled with liquid or granular weighting material, which device may be fitted over the handle of a baseball bat and frictionally engaged with the barrel thereof for the purpose of permitting the batter to take practice swings with a heavy bat prior to taking his turn at bat.
    Type: Grant
    Filed: August 23, 1974
    Date of Patent: July 27, 1976
    Assignee: Bat Weight, Inc.
    Inventor: Mariano P. Diforte, Jr.