Granted Patent
Utility
US 6,120,643 · App. 09/427,785
Aramid and glass fiber absorbent papers
Inventor:
Mikhail R. Levit
Patented Case
View Patent ↗
Granted: Sep 19, 2000
Filed: Oct 27, 1999
Inventor
Mikhail R. Levit
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.