Granted Patent
Utility
US 6,231,329 · App. 09/326,237
Locking apparatus for a movable platen
Inventor:
Frederick Van Keuren
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Jun 4, 1999
Inventor
Frederick Van Keuren
Assignee (at issue)
Milacron LLC
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.