Granted Patent
Utility
US 5,294,261 · App. 07/970,346
Surface cleaning using an argon or nitrogen aerosol
Inventors:
Wayne Thomas McDermott, Richard Carl Ockovic, Jin J. Wu, Douglas W. Cooper, Alexander Schwarz, Henry L. Wolfe
Patented Case
View Patent ↗
Granted: Mar 15, 1994
Filed: Nov 2, 1992
Inventors
Wayne Thomas McDermott
Richard Carl Ockovic
Jin J. Wu
Douglas W. Cooper
Alexander Schwarz
Henry L. Wolfe
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.