Granted Patent
Utility
US 4,545,256 · App. 06/705,038
Integral solid front gauge case for a pressure gauge
Inventor:
Walter J. Ferguson
Patented Case
View Patent ↗
Granted: Oct 8, 1985
Filed: Feb 25, 1985
Inventor
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.