Granted Patent
Utility
US 4,403,949 · App. 06/278,151
Rosin flux filtration system
Inventors:
Edward J. March, George Michael Wenger
Patented Case
View Patent ↗
Granted: Sep 13, 1983
Filed: Jun 29, 1981
Inventors
Edward J. March
George Michael Wenger
Assignee (at issue)
Western Electric 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.