Granted Patent
Utility
US 4,334,554 · App. 06/180,051
Removable orifice
Inventors:
Walter Geiger, Boyd A. Kessinger
Patented Case
View Patent ↗
Granted: Jun 15, 1982
Filed: Aug 20, 1980
Inventors
Walter Geiger
Boyd A. Kessinger
Assignee (at issue)
Westinghouse Electric Company 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.