Granted Patent
Utility
US 5,376,455 · App. 08/131,696
Heat-treatment convertible coated glass and method of converting same
Inventors:
Klaus W. Hartig, Philip J. Lingle
Patented Case
View Patent ↗
Granted: Dec 27, 1994
Filed: Oct 5, 1993
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.