Granted Patent
Utility
US 5,564,248 · App. 08/336,995
Construction hanger and method of making the same
Inventor:
Gerald Callies
Patented Case
View Patent ↗
Granted: Oct 15, 1996
Filed: Nov 10, 1994
Inventor
Gerald Callies
Assignee (at issue)
United Steel Products 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.