Granted Patent
Utility
US 4,939,678 · App. 07/193,069
Method for calibration of coordinate measuring machine
Inventor:
Walter L. Beckwith, Jr.
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: May 12, 1988
Inventor
Walter L. Beckwith, Jr.
Assignee (at issue)
Brown & Sharpe Manufacturing 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.