Granted Patent
Utility
US 4,376,014 · App. 06/345,244
Headbox for forming multi-ply sheets
Inventor:
Jan I. Bergstrom
Patented Case
View Patent ↗
Granted: Mar 8, 1983
Filed: Feb 3, 1982
Inventor
Jan I. Bergstrom
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.