Granted Patent
Utility
US 4,807,616 · App. 07/119,880
Portable ventilator apparatus
Inventor:
Carmeli Adahan
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Nov 12, 1987
Inventor
Carmeli Adahan
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.