Granted Patent
Utility
US 5,346,138 · App. 08/018,086
Seal for metering orifice
Inventor:
Ralph G. Ridenour
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Feb 16, 1993
Inventor
Ralph G. Ridenour
Assignee (at issue)
Universal Enterprises, 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.