Granted Patent
Utility
US 4,778,281 · App. 06/452,537
Molten metal sampler with heat sensors
Inventor:
Richard A. Falk
Patented Case
View Patent ↗
Granted: Oct 18, 1988
Filed: Dec 23, 1982
Inventor
Richard A. Falk
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.