Granted Patent
Utility
US 4,693,012 · App. 06/755,685
Measuring bar for free abrasive machines
Inventor:
Joseph V. Cesna
Patented Case
View Patent ↗
Granted: Sep 15, 1987
Filed: Jul 16, 1985
Inventor
Joseph V. Cesna
Assignee (at issue)
SPEEDFAM CO., LTD.
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.