Granted Patent
Utility
US 6,398,195 · App. 09/694,557
Method of and apparatus for producing sub-micron bubbles in liquids and slurries
Inventor:
Jeffrey H. Sherman
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Oct 23, 2000
Inventor
Jeffrey H. Sherman
Assignee (at issue)
GRT, 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.