Granted Patent
Utility
US 4,252,176 · App. 05/954,759
Injection ram control
Inventor:
Enno H. Page
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: Oct 26, 1978
Inventor
Enno H. Page
Assignee (at issue)
NL 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.