Granted Patent
Utility
US 5,220,919 · App. 07/748,976
Blood alcohol monitor
Inventors:
Mary F. Phillips, Jeffrey Scott Hawthorne
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Aug 23, 1991
Inventors
Mary F. Phillips
Jeffrey Scott Hawthorne
Assignee (at issue)
SAFETY TECH
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.