Granted Patent
Utility
US 5,339,844 · App. 08/082,866
Low cost equipment for cleaning using liquefiable gases
Inventors:
Thomas B. Stanford, Sidney C. Chao
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Sep 7, 1993
Inventors
Thomas B. Stanford
Sidney C. Chao
Assignee (at issue)
Hughes Aircraft Company
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.