Granted Patent
Utility
US 6,053,922 · App. 08/680,628
Flexible shaft
Inventors:
William R. Krause, Garland U. Edwards
Patented Case
View Patent ↗
Granted: Apr 25, 2000
Filed: Jul 17, 1996
Inventors
William R. Krause
Garland U. Edwards
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.