Granted Patent
Utility
US 4,263,939 · App. 06/033,760
Single stage regulator with surge reducing valve
Inventor:
Robert E. Bird
Patented Case
View Patent ↗
Granted: Apr 28, 1981
Filed: Apr 27, 1979
Inventor
Robert E. Bird
Assignee (at issue)
Modern Engineering Company, 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.