Granted Patent
Utility
US 4,358,342 · App. 06/226,185
Papermaking headbox having rigid lips and actvating means
Inventor:
David A. Nuttall
Patented Case
View Patent ↗
Granted: Nov 9, 1982
Filed: Jan 19, 1981
Inventor
David A. Nuttall
Assignee (at issue)
Kimberly-Clark 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.