Granted Patent
Utility
US 4,375,448 · App. 06/250,546
Method of forming a web of air-laid dry fibers
Inventors:
David W. Appel, Raymond T. Chung
Patented Case
View Patent ↗
Granted: Mar 1, 1983
Filed: Apr 3, 1981
Inventors
David W. Appel
Raymond T. Chung
Assignee (at issue)
Kimberly-Clark 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.