Patents by Inventor Sanford Blackman

Sanford Blackman 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).

  • Adjustable chair
    Patent number: 5667274
    Abstract: An adjustable chair for supporting a human body including a base having a first body supporting element and a second body supporting element disposed in angular, telescoping, and diverging relation relative to one another and being telescopingly and divergingly adjustable from a first position encompassing a first seating area, a first seating height, and a first back support height, and a second position encompassing a second larger seating area, a second higher seating height, and a second higher back support height.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: September 16, 1997
    Inventor: Sanford Blackman