Granted Patent
Utility
US 4,049,040 · App. 05/602,687
Squeeze casting apparatus and method
Inventor:
Richard Lynch
Patented Case
View Patent ↗
Granted: Sep 20, 1977
Filed: Aug 7, 1975
Inventor
Richard Lynch
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.