Granted Patent
Utility
US 6,203,310 · App. 09/221,767
Injection molding apparatus having mold cores with reverse taper
Inventor:
Paul Matysek
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Dec 28, 1998
Inventor
Paul Matysek
Assignee (at issue)
Mold-Masters 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.