Granted Patent
Utility
US 5,231,768 · App. 07/706,953
Stacked block step gage
Inventor:
Walter L. Beckwith, Jr.
Patented Case
View Patent ↗
Granted: Aug 3, 1993
Filed: May 29, 1991
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.