Granted Patent
Utility
US 6,742,380 · App. 09/917,363
Technique for measuring small distances between, and for measuring the flatness of, electrically conductive surfaces
Inventor:
Matthew Johnston
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Jul 27, 2001
Inventor
Matthew Johnston
Assignee (at issue)
Seagate Technology LLC
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.