Granted Patent
Utility
US 4,874,311 · App. 07/060,420
Method and apparatus for improved regenerative furnace
Inventor:
Gregory M. Gitman
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Aug 3, 1987
Inventor
Gregory M. Gitman
Assignee (at issue)
American Combustion, 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.