Granted Patent
Utility
US 5,975,755 · App. 08/950,423
Shield for molten metal immersible thermocouple support pole
Inventor:
John Harvey Roberson
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Oct 15, 1997
Inventor
John Harvey Roberson
Assignee (at issue)
MIDWEST INSTRUMENT 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.