Granted Patent
Utility
US 5,242,560 · App. 07/736,581
Heat treatable sputter-coated glass
Inventors:
Philip J. Lingle, Raymond Nalepka
Patented Case
View Patent ↗
Granted: Sep 7, 1993
Filed: Jul 26, 1991
Inventors
Philip J. Lingle
Raymond Nalepka
Assignee (at issue)
Guardian Industries Corp.
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.