Granted Patent
Utility
US 5,209,028 · App. 07/958,417
Apparatus to clean solid surfaces using a cryogenic aerosol
Inventors:
Wayne Thomas McDermott, Jin J. Wu, Richard Carl Ockovic
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Oct 9, 1992
Inventors
Wayne Thomas McDermott
Jin J. Wu
Richard Carl Ockovic
Assignees (at issue)
Air Products and Chemicals, Inc.
International Business Machines Corporation
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.