Granted Patent
Utility
US 5,398,396 · App. 08/023,363
Method and apparatus for withdrawing a machine shaft
Inventors:
Clifton L. Sanders, Harvey J. Kallenberger
Patented Case
View Patent ↗
Granted: Mar 21, 1995
Filed: Feb 26, 1993
Inventors
Clifton L. Sanders
Harvey J. Kallenberger
Assignee (at issue)
Harnischfeger Corporation
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.