Patents by Inventor Michael Popper

Michael Popper 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).

  • Electronic wrist calculator
    Patent number: 4141074
    Abstract: Individual planar enjoined links of a flexible wristband carry one or more manually operable keys, thereby defining a miniature keyboard array for a solid state wrist calculator. One or more of the links may carry a wrist watch battery for powering the calculator.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: February 20, 1979
    Inventor: Michael Popper