Granted Patent
Utility
US 5,149,402 · App. 07/316,571
Headbox having a primary stock flow and a laterally injected secondary flow
Inventor:
Ian W. Riddick
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Feb 27, 1989
Inventor
Ian W. Riddick
Assignee (at issue)
Beloit Corporation
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.