Granted Patent
Utility
US 4,283,947 · App. 06/074,059
Self cleaning, steam cooled, gas sample probe
Inventors:
David B. George, Leonard K. Bailey
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Sep 10, 1979
Inventors
David B. George
Leonard K. Bailey
Assignee (at issue)
Kennecott Copper 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.