Granted Patent
Utility
US 5,077,521 · App. 07/456,759
Supply connection integrity monitor
Inventors:
Thomas L. Langford, II, Philip W. Bullinger, Richard D. Farris
Patented Case
View Patent ↗
Granted: Dec 31, 1991
Filed: Dec 26, 1989
Inventors
Thomas L. Langford, II
Philip W. Bullinger
Richard D. Farris
Assignee (at issue)
NCR Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.