Granted Patent
Utility
US 6,472,203 · App. 09/705,300
Combination air sampling cassette and nutrient media dish
Inventors:
David Forrest Gallup, Robert J. Bolender, James Purves, Lon E. Bell
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Nov 1, 2000
Inventors
David Forrest Gallup
Robert J. Bolender
James Purves
Lon E. Bell
Assignee (at issue)
Environmental Microbiology Laboratory, 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.