Granted Patent
Utility
US 5,167,922 · App. 07/515,242
Assay cartridge
Inventor:
Ernest Long
Patented Case
View Patent ↗
Granted: Dec 1, 1992
Filed: Apr 27, 1990
Inventor
Ernest Long
Assignee (at issue)
PB Diagnostic Systems, 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.