Patents by Inventor Carl A. Evert

Carl A. Evert 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).

  • Signal attenuating apparatus
    Patent number: 4438408
    Abstract: Disclosed is an apparatus having a signal attenuating portion for setting the gain or loss in amplitude of an electrical signal received by the apparatus, and alternatively, provides a gain of unity without a change of setting. The apparatus employs a plurality of switching devices which may be selectively opened and closed to provide the apparatus with a fixed gain of unity and alternatively predetermined losses or gains to the input signals.
    Type: Grant
    Filed: August 17, 1982
    Date of Patent: March 20, 1984
    Assignee: Harvey Hubbell Incorporated
    Inventors: Ambroz K. Skrovanek, Carl A. Evert