Granted Patent
Utility
US 4,814,034 · App. 07/141,027
Process of making a flat stock fibrous cellulosic food casing
Inventors:
James R. Hansen, Jerome J. M. Rasmussen
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Jan 5, 1987
Inventors
James R. Hansen
Jerome J. M. Rasmussen
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.