Granted Patent
Utility
US 4,740,261 · App. 06/912,029
Extrusion methods and apparatus
Inventor:
Karen Moser
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: Sep 25, 1986
Inventor
Karen Moser
Assignee (at issue)
American Telephone and Telegraph Company, AT&T Technologies, 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.