Patents by Inventor Jacek M. Zakrzewski

Jacek M. Zakrzewski 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).

  • Patent number: 4602387
    Abstract: A weight vest which is fully foam lined, sewn canvas, incorporating means for wearing an adjustable amount of weight upwards to fifty pounds, also means to retain said weights within specially shaped pockets conforming to weight shape by means of an elastic strap capturing an exposed end of the weight. Also providing means to adjust the vest size to fit various body shapes by means of side strap lace adjustment with a zipper front.
    Type: Grant
    Filed: October 15, 1984
    Date of Patent: July 29, 1986
    Inventor: Jacek M. Zakrzewski