Granted Patent
Utility
US 4,731,520 · App. 06/878,096
Aroma diffuser apparatus
Inventors:
Dov Z. Glucksman, Eugene Puchalski, Mark E. Hardy
Patented Case
View Patent ↗
Granted: Mar 15, 1988
Filed: Jun 24, 1986
Inventors
Dov Z. Glucksman
Eugene Puchalski
Mark E. Hardy
Assignee (at issue)
Charles of the Ritz Group Ltd.
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.