Granted Patent
Utility
US 4,497,621 · App. 06/484,561
Apparatus for simultaneously driving valve means through co-injection nozzles of a multi-cavity injection molding machine
Inventors:
Frederick G. Kudert, Maurice G. Latreille, William A. Tennant, Thomas T. Tung
Patented Case
View Patent ↗
Granted: Feb 5, 1985
Filed: Apr 13, 1983
Inventors
Frederick G. Kudert
Maurice G. Latreille
William A. Tennant
Thomas T. Tung
Assignee (at issue)
American Can 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.