Granted Patent
Utility
US 4,776,102 · App. 07/085,505
Tool for measuring the height of a material buildup on a reference plane
Inventor:
Thomas A. Carroll
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Aug 14, 1987
Inventor
Thomas A. Carroll
Assignee (at issue)
Hughes Aircraft Company
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.