Granted Patent
Utility
US 4,250,876 · App. 05/932,535
Emergency life support system
Inventor:
Max L. Kranz
Patented Case
View Patent ↗
Granted: Feb 17, 1981
Filed: Aug 10, 1978
Inventor
Max L. Kranz
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.