Granted Patent
Utility
US 4,285,767 · App. 05/886,278
Headbox having adjustable flow passages
Inventor:
Robert E. Page
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Mar 13, 1978
Inventor
Robert E. Page
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.