Granted Patent
Utility
US 4,581,089 · App. 06/660,146
Glazing system and method of installation
Inventor:
Douglas R. MacMillan
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Oct 12, 1984
Inventor
Douglas R. MacMillan
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.