Granted Patent
Utility
US 4,896,549 · App. 07/205,464
Molten metal sampler
Inventor:
Richard A. Falk
Patented Case
View Patent ↗
Granted: Jan 30, 1990
Filed: Jun 10, 1988
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.