Granted Patent
Utility
US 4,432,473 · App. 06/237,808
Cartridge-type dispenser
Inventor:
George E. MacEwen
Patented Case
View Patent ↗
Granted: Feb 21, 1984
Filed: Feb 21, 1984
Inventor
George E. MacEwen
Assignee (at issue)
Sealright Co. 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.