Granted Patent
Utility
US 6,520,243 · App. 09/758,053
Mold riding shot blocker
Inventor:
Ben A. Dugger
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Jan 10, 2001
Inventor
Ben A. Dugger
Assignee (at issue)
Vulcan Engineering Company
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.