Granted Patent
Utility
US 5,595,086 · App. 08/285,173
Apparatus for calibrating hollow nonsymmetrical multiplane extrusions and associated method
Inventor:
Thomas W. Scherf
Patented Case
View Patent ↗
Granted: Jan 21, 1997
Filed: Aug 2, 1994
Inventor
Thomas W. Scherf
Assignee (at issue)
Aluminum Company of America
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.