Granted Patent
Utility
US 6,159,607 · App. 09/332,897
Heat treatable, durable, ir-reflecting sputter-coated glasses and method of making same
Inventors:
Klaus W. Hartig, Philip J. Lingle
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Jun 15, 1999
Inventors
Klaus W. Hartig
Philip J. Lingle
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.