Granted Patent
Utility
US 5,661,881 · App. 08/593,820
Method of making framing components of expanded metal
Inventor:
Robert J. Menchetti
Patented Case
View Patent ↗
Granted: Sep 2, 1997
Filed: Jan 30, 1996
Inventor
Robert J. Menchetti
Assignee (at issue)
National Gypsum Company
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.