Granted Patent
Utility
US 6,802,428 · App. 10/077,367
Apparatus and method allowing gas flowing into and/or out of container
Inventor:
Leonard Ekkert
Patented Case
View Patent ↗
Granted: Oct 12, 2004
Filed: Feb 15, 2002
Inventor
Leonard Ekkert
Assignee (at issue)
PHOENIX CLOSURES, 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.