Granted Patent
Utility
US 5,425,861 · App. 08/179,129
Method of making high performance, durable, low-e glass
Inventors:
Klaus W. Hartig, Philip J. Lingle
Patented Case
View Patent ↗
Granted: Jun 20, 1995
Filed: Jan 10, 1994
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.