Patents by Inventor Peter F. Berdzar

Peter F. Berdzar 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).

  • Maximum depth monitoring apparatus
    Patent number: 4336591
    Abstract: A depth monitoring device monitors the period of a diver's maximum depth. A aximum depth display is coupled to the depth monitor to enable the diver to quickly determine, at any given time during the period, his maximum depth of submergence. When the diver reaches a preselected critical maximum depth, an audio alarm coupled to the depth monitor is activated to alert the diver.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: June 22, 1982
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Peter F. Berdzar, Robert S. Acks