Patents by Inventor James R. Haymaker

James R. Haymaker 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).

  • Patent number: 4456876
    Abstract: A frequency counter (20) measures and displays a plurality of frequencies appearing on input channels (22, 24, 26 and 28) of an analog circuit (30). A program switch (32) is coupled to a decoder logic circuit (34) which facilitates the operation of counter (20) in one of a plurality of selectable program modes. A steering logic circuit (36) is coupled to circuit (34) and facilitates the selection and order of the input channels (22, 24, 26 and 28) during a measurement cycle. Toggle switches (38, 40 and 42) are coupled to circuit (36) to facilitate the establishment of a sign bit, a channel order and a channel select, respectively. A channel display circuit (46) provides visual indication of the sign, channel select and channel order.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: June 26, 1984
    Assignee: AT&T Technologies, Inc.
    Inventor: James R. Haymaker