Granted Patent
Utility
US 5,771,921 · App. 08/530,083
Pressure regulator
Inventor:
Dwight N. Johnson
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Sep 19, 1995
Inventor
Dwight N. Johnson
Assignee (at issue)
CTB HOLDINGS LLC
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.