Granted Patent
Utility
US 4,744,233 · App. 06/884,974
Apparatus for bending rectangular tubes
Inventor:
Gerald R. Trudell
Patented Case
View Patent ↗
Granted: May 17, 1988
Filed: Jul 14, 1986
Inventor
Gerald R. Trudell
Assignee (at issue)
AP Industries, Inc.
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.