Granted Patent
Utility
US 6,090,572 · App. 09/105,309
Filtration and extraction device and method of using the same
Inventor:
Mark Crosby
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Jun 26, 1998
Inventor
Mark Crosby
Assignee (at issue)
Biostar, 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.