Granted Patent
Utility
US 4,904,440 · App. 07/218,508
Apparatus for and methods of airlaying fibrous webs having discrete particles therein
Inventor:
John J. Angstadt
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Jul 1, 1988
Inventor
John J. Angstadt
Assignee (at issue)
The Procter & Gamble Company
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.