Granted Patent
Utility
US 6,817,403 · App. 10/443,329
Matchplate molding machine for forming sand molds
Inventor:
William A. Hunter
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: May 22, 2003
Inventor
William A. Hunter
Assignee (at issue)
Hunter Automated Machinery Corporation
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.