Granted Patent
Utility
US 4,387,596 · App. 06/231,217
Method of and device for ultrasonically testing spherical bodies
Inventors:
Max Fenkner, Hilmar Wehner
Patented Case
View Patent ↗
Granted: Jun 14, 1983
Filed: Feb 2, 1981
Inventors
Max Fenkner
Hilmar Wehner
Assignee (at issue)
Fag Kugelfischer Georg Shäfer AG
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.