Granted Patent
Utility
US 6,398,439 · App. 09/928,603
Oval rotary dispenser with pressure relief
Inventor:
Alex S. Szekely
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Aug 13, 2001
Inventor
Alex S. Szekely
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.