Granted Patent
Utility
US 6,425,436 · App. 09/595,131
Sand core breaking apparatus
Inventor:
Robert G. Peting
Patented Case
View Patent ↗
Granted: Jul 30, 2002
Filed: Jun 16, 2000
Inventor
Robert G. Peting
Assignee (at issue)
AMSTED INDUSTRIES INCORPORATED
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.