Granted Patent
Utility
US 6,467,525 · App. 09/911,271
Gelatin coated sand core and method of making same
Inventors:
Richard M. Herreid, Brian J. Srsen
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Jul 23, 2001
Inventors
Richard M. Herreid
Brian J. Srsen
Assignee (at issue)
Hormel Foods 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.