Granted Patent
Utility
US 5,373,235 · App. 08/038,214
System and method using portable wall engaging ferromagnetic particle impregnated target medium for electromagnetically measuring distance between oposing walls of a structure
Inventors:
William G. Clark, Jr., Francis X. Gradich, Lee W. Burtner, Michael J. Metala
Patented Case
View Patent ↗
Granted: Dec 13, 1994
Filed: Mar 29, 1993
Inventors
William G. Clark, Jr.
Francis X. Gradich
Lee W. Burtner
Michael J. Metala
Assignee (at issue)
Westinghouse Electric Company 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.