Patents by Inventor Barbara Ewa Kropielnicki

Barbara Ewa Kropielnicki 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).

  • Electrical signal separating device for combined windshield antenna and heater grid
    Patent number: 4086594
    Abstract: A device which can be interposed between a radio and an electrically heated window so as to enable the to a d.c. power source to effect heating of same. The device comprises a blocking circuit having mutually coupled coils interposed between the d.c. power source and the terminals of the heating element of the window.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: April 25, 1978
    Assignee: B.S.H. Electronics (Manchester) Limited
    Inventors: Barbara Ewa Kropielnicki, Jerzy Jacek Kropielnicki