Granted Patent
Utility
US 5,143,530 · App. 07/600,953
Filtering apparatus
Inventors:
Gaurang B. Haldipur, William J. Dilmore
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Oct 22, 1990
Inventors
Gaurang B. Haldipur
William J. Dilmore
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.