Granted Patent
Utility
US 4,409,251 · App. 06/361,878
Controllably moisturized mold resistant cellulosic food casings
Inventor:
Thomas E. Higgins
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Mar 25, 1982
Inventor
Thomas E. Higgins
Assignee (at issue)
Union Carbide Corporation
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.