Granted Patent
Utility
US 4,609,559 · App. 06/556,443
Tar-depleted liquid smoke and method of preparation
Inventor:
Myron D. Nicholson
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: Nov 30, 1983
Inventor
Myron D. Nicholson
Assignee (at issue)
Viskase Companies, 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.