Granted Patent
Utility
US 5,567,381 · App. 08/407,407
Hybrid heat treating furnace
Inventor:
Matthew Carter
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Mar 20, 1995
Inventor
Matthew Carter
Assignee (at issue)
Abar Ipsen 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.