Granted Patent
Utility
US 4,724,009 · App. 06/848,247
Method and apparatus for cleaning reels
Inventors:
John R. Doyle, Dale G. Stover
Patented Case
View Patent ↗
Granted: Feb 9, 1988
Filed: Apr 4, 1986
Inventors
John R. Doyle
Dale G. Stover
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.