Granted Patent
Utility
US 6,725,859 · App. 09/006,982
Apparatus for delivering air-borne substances
Inventors:
Simon J. Rothenberg, Hsu-Chi Yeh, Bernard Greenspan
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Jan 14, 1998
Inventors
Simon J. Rothenberg
Hsu-Chi Yeh
Bernard Greenspan
Assignee (at issue)
Charles River Laboratories, 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.