Granted Patent
Utility
US 4,355,962 · App. 06/106,924
Pump dispenser with sealing plunger
Inventor:
Wallace F. Magers
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Dec 26, 1979
Inventor
Wallace F. Magers
Assignee (at issue)
Realex 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.