Granted Patent
Utility
US 6,575,191 · App. 10/136,527
Evacuable container having one-way valve with filter element
Inventors:
Janet L. Skeens, Gerald Sweeney
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Apr 30, 2002
Inventors
Janet L. Skeens
Gerald Sweeney
Assignee (at issue)
ILLINOIS TOOL WORKS 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.