Granted Patent
Utility
US 4,835,881 · App. 07/110,405
Dryer section apparatus
Inventor:
John Welsby
Patented Case
View Patent ↗
Granted: Jun 6, 1989
Filed: Oct 19, 1987
Inventor
John Welsby
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.