Granted Patent
Utility
US 5,506,391 · App. 08/089,690
Liquid heater using electrical oscillations
Inventors:
Amar K. Burayez, Nathan H. Noe
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: Jul 12, 1993
Inventors
Amar K. Burayez
Nathan H. Noe
Assignee (at issue)
Lexington Environmental Technologies, 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.