Granted Patent
Utility
US 4,291,795 · App. 06/013,959
Coupling lubrication system
Inventors:
Loris J. Charchian, Donald O. Emmons, Thaddeus F. Zlotek
Patented Case
View Patent ↗
Granted: Sep 29, 1981
Filed: Feb 22, 1979
Inventors
Loris J. Charchian
Donald O. Emmons
Thaddeus F. Zlotek
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.