Granted Patent
Utility
US 5,455,781 · App. 08/114,453
Apparatus and method for determining the measurement accuracy of electronic gas meters
Inventors:
Thomas J. Reynal, Craig Graber
Patented Case
View Patent ↗
Granted: Oct 3, 1995
Filed: Aug 31, 1993
Inventors
Thomas J. Reynal
Craig Graber
Assignee (at issue)
Dresser Industries, Inc.
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.