Granted Patent
Utility
US 4,501,152 · App. 06/473,829
Temperature compensator for liquid filled pressure gauge
Inventors:
Richard H. Wetterhorn, Walter J. Ferguson
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Mar 9, 1983
Inventors
Richard H. Wetterhorn
Walter J. Ferguson
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.