Granted Patent
Utility
US 4,650,318 · App. 06/730,916
Radiation pyrometer with gas purge
Inventors:
John Pointer, Ronald A. Masom
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: May 6, 1985
Inventors
John Pointer
Ronald A. Masom
Assignee (at issue)
Smiths Industries Public Limited 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.