Granted Patent
Utility
US 4,702,800 · App. 06/935,446
Horizontal twin wire paper machine
Inventor:
Richard W. Creagan
Patented Case
View Patent ↗
Granted: Oct 27, 1987
Filed: Nov 26, 1986
Inventor
Richard W. Creagan
Assignee (at issue)
Black Clawson Company, 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.