Granted Patent
Utility
US 4,854,844 · App. 07/213,450
Die-lip adjusting mechanism
Inventor:
Richard A. Carlsen
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: Jun 29, 1988
Inventor
Richard A. Carlsen
Assignee (at issue)
John Brown, 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.