Granted Patent
Utility
US 4,998,530 · App. 07/419,658
Resuscitation aid
Inventor:
T. Anthony DonMichael
Patented Case
View Patent ↗
Granted: Mar 12, 1991
Filed: Oct 11, 1989
Inventor
T. Anthony DonMichael
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.