Granted Patent
Utility
US 4,779,848 · App. 06/821,898
Cooling muff used in thermal processing method
Inventors:
Daniel J. Brimm, James R. Gramse
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Jan 23, 1986
Inventors
Daniel J. Brimm
James R. Gramse
Assignee (at issue)
Chemtronics Co., Ltd.
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.