Patents by Inventor David W. Masukewicz

David W. Masukewicz 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).

  • Automated channel test unit
    Patent number: 5018184
    Abstract: Disclosed is a circuit for the automatic testing of channel units such as found in subscriber loop carrier (SLC.RTM.) systems. The circuit is included as part of the remote terminal of the system and performs type tests, power-up tests and routine verification tests. The circuit also monitors the subscriber channel, and connects the subscriber in the event of a ringing signal or an off-hook during a test. The results of the test are sent to a display unit which can be located at the remote terminal and/or the central office.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: May 21, 1991
    Assignee: AT&T Bell Laboratories
    Inventors: Lane J. Abrams, Kevin Loughran, David W. Masukewicz, Robert L. Overstreet, Jr.