Granted Patent
Utility
US 6,648,622 · App. 09/274,443
Apparatus and method for multi-layer injection molding
Inventors:
Jobst U. Gellert, Denis Babin
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Mar 22, 1999
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.