Granted Patent
Utility
US 4,904,439 · App. 07/220,293
Method of making a non-woven fiber web using a multi-headed ductless webber
Inventors:
Allan P. Farrington, Gerald M. Marshall
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Jul 18, 1988
Inventors
Allan P. Farrington
Gerald M. Marshall
Assignee (at issue)
Johnson & Johnson GmbH
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.