Granted Patent
Utility
US 4,243,396 · App. 06/030,127
Humidifier separator
Inventor:
Richard A. Cronenberg
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Apr 16, 1979
Inventor
Richard A. Cronenberg
Assignee (at issue)
BECTON, DICKINSON AND COMPANY
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.