Granted Patent
Utility
US 4,324,596 · App. 06/201,782
Method for substantially cold working nonheat-treatable aluminum alloys
Inventor:
Robert A. Wuebker
Patented Case
View Patent ↗
Granted: Apr 13, 1982
Filed: Oct 29, 1980
Inventor
Robert A. Wuebker
Assignee (at issue)
Federal Signal 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.