Granted Patent
Utility
US 6,074,191 · App. 08/977,676
Five layer injection molding apparatus having four position valve member actuating mechanism
Inventors:
Jobst U. Gellert, Denis Babin
Patented Case
View Patent ↗
Granted: Jun 13, 2000
Filed: Nov 24, 1997
Inventors
Jobst U. Gellert
Denis Babin
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.