Granted Patent
Utility
US 6,702,539 · App. 10/405,305
Pneumatic conveying
Inventor:
Brian Snowdon
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Apr 2, 2003
Inventor
Brian Snowdon
Assignee (at issue)
Clean Cut Technologies, LLC
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.