Granted Patent
Utility
US 4,767,324 · App. 07/053,898
Transition section for muffle furnace
Inventor:
Thomas T. Hitch
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: May 26, 1987
Inventor
Thomas T. Hitch
Assignee (at issue)
General Electric 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.