Granted Patent
Utility
US 4,621,632 · App. 06/667,142
Humidifier system
Inventors:
Harold U. Bartels, Finn Sveen
Patented Case
View Patent ↗
Granted: Nov 11, 1986
Filed: Nov 1, 1984
Inventors
Harold U. Bartels
Finn Sveen
Assignee (at issue)
Bear Medical Systems, Inc.
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.