Granted Patent
Utility
US 5,344,718 · App. 07/876,350
High performance, durable, low-E glass
Inventors:
Klaus W. Hartig, Philip J. Lingle
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Apr 30, 1992
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.