Granted Patent
Utility
US 6,448,564 · App. 09/580,631
Apparatus, methods, and systems for assaying materials
Inventors:
Alfred N. Johnson, Jeffrey W. Dickinson, John L. McGehee, David H. Weigle, Timothy B. Ramsey
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: May 30, 2000
Inventors
Alfred N. Johnson
Jeffrey W. Dickinson
John L. McGehee
David H. Weigle
Timothy B. Ramsey
Assignee (at issue)
GTSD Sub III
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.