Granted Patent
Utility
US 6,190,094 · App. 09/324,240
Pneumatic conveying apparatus
Inventors:
David Rediess, Eric Kerkmaz
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: Jun 2, 1999
Inventors
David Rediess
Eric Kerkmaz
Assignee (at issue)
Plastipak Packaging, 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.