Granted Patent
Utility
US 4,489,162 · App. 06/332,781
Fresh blood (unfixed) hematology control
Inventors:
Pamela L. Hawkins, Carole Young
Patented Case
View Patent ↗
Granted: Dec 18, 1984
Filed: Dec 21, 1981
Inventors
Pamela L. Hawkins
Carole Young
Assignee (at issue)
American Hospital Supply Corp.
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.