Patents by Inventor Joseph Drefko

Joseph Drefko 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).

  • Two way radio safety helmet
    Patent number: 4357711
    Abstract: A 43 channel citizens band radio motorcycle safety helmet, including a helmet shell having a removable front windshield, and containing a C.B. radio, a pair of earphones, a microphone and a control console, the earphones being selectively movable in position so to allow exterior sounds pass through helmet side holes to the ears.
    Type: Grant
    Filed: January 29, 1981
    Date of Patent: November 2, 1982
    Inventors: Joseph Drefko, George Spector