Granted Patent
Utility
US 4,961,702 · App. 07/313,196
Retainer for injection molds
Inventor:
Frederick C. Kern
Patented Case
View Patent ↗
Granted: Oct 9, 1990
Filed: Feb 21, 1989
Inventor
Frederick C. Kern
Assignee (at issue)
Fairchild Industries, 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.