Granted Patent
Utility
US 4,584,689 · App. 06/130,673
Apparatus for modifying the liquefication or solidification point of a gas
Inventors:
William F. List, Ronald W. Minarik
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Mar 17, 1980
Inventors
William F. List
Ronald W. Minarik
Assignee (at issue)
Westinghouse Electric Company LLC
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.