Granted Patent
Utility
US 4,579,604 · App. 06/707,394
Method of spin forging a finished article
Inventor:
Michael Beyer
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Mar 1, 1985
Inventor
Michael Beyer
Assignee (at issue)
NI 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.