Granted Patent
Utility
US 5,881,920 · App. 08/851,770
Product dispenser having separable refill cartridge
Inventors:
Richard H. Seager, Peter A. Piscopo, Alfred J. Astoreca
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: May 6, 1997
Inventors
Richard H. Seager
Peter A. Piscopo
Alfred J. Astoreca
Assignee (at issue)
PLASTAL CO., LTD.
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.