Granted Patent
Utility
US 5,125,421 · App. 07/643,346
Calendered ultraporous cigarette plug wrap, method of producing same and cigarettes made from the wrap
Inventor:
Melvin Glenn Mitchell
Patented Case
View Patent ↗
Granted: Jun 30, 1992
Filed: Jan 22, 1991
Inventor
Melvin Glenn Mitchell
Assignee (at issue)
P.H. Glatfelter Company
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.