Granted Patent
Utility
US 4,281,548 · App. 06/084,755
Method of testing rotationally symmetrical bodies, especially balls, for defects
Inventor:
Hans-Rudolf Kober
Patented Case
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Granted: Aug 4, 1981
Filed: Oct 15, 1979
Inventor
Hans-Rudolf Kober
Assignee (at issue)
Kugelfischer Georg Schafer & Co.
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.