Granted Patent
Utility
US 4,287,932 · App. 06/179,674
Process for the precision molding of castings
Inventor:
Hans Schneider
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: Aug 20, 1980
Inventor
Hans Schneider
Assignee (at issue)
Sulzer Brothers Limited
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.