Granted Patent
Utility
US 4,952,195 · App. 07/004,897
Graphite drive shaft assembly
Inventor:
John W. Traylor
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Jan 20, 1987
Inventor
John W. Traylor
Assignee (at issue)
Eagle-Picher Industries, Inc.
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.