Granted Patent
Utility
US 5,804,264 · App. 08/475,699
Membrane permeable to frangrances and other products
Inventor:
William E. Bowen
Patented Case
View Patent ↗
Granted: Sep 8, 1998
Filed: Jun 7, 1995
Inventor
William E. Bowen
Assignee (at issue)
American National Can 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.