Granted Patent
Utility
US 5,073,967 · App. 07/726,678
Humidifier device with delayed energization
Inventor:
Frank Marino
Patented Case
View Patent ↗
Granted: Dec 17, 1991
Filed: Jul 8, 1991
Inventor
Frank Marino
Assignee (at issue)
Duracraft Corp.
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.