Granted Patent
Utility
US 6,729,871 · App. 10/041,629
Injection moulding device having a cooled valve pin guide bush
Inventors:
Peter Sattler, Udo Liebram
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Jan 10, 2002
Inventors
Peter Sattler
Udo Liebram
Assignee (at issue)
SYNVENTIVE MOLDING SOLUTIONS, INC.
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.