Granted Patent
Utility
US 5,034,162 · App. 07/509,885
High capacity portable humidifier
Inventor:
Bernard Chiu
Patented Case
View Patent ↗
Granted: Jul 23, 1991
Filed: Apr 17, 1990
Inventor
Bernard Chiu
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.