Granted Patent
Utility
US 5,714,389 · App. 07/995,331
Test device and method for colored particle immunoassay
Inventors:
David Charlton, Neal W. Miller
Patented Case
View Patent ↗
Granted: Feb 3, 1998
Filed: Dec 23, 1992
Inventors
David Charlton
Neal W. Miller
Assignee (at issue)
Carter Wallace, 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.