Granted Patent
Utility
US 4,559,071 · App. 06/661,267
Ablating liquefaction method
Inventors:
Gerald E. Kunkle, Joseph M. Matesa
Patented Case
View Patent ↗
Granted: Dec 17, 1985
Filed: Oct 16, 1984
Inventors
Gerald E. Kunkle
Joseph M. Matesa
Assignee (at issue)
PPG 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.