Granted Patent
Utility
US 4,179,331 · App. 05/851,683
Glass fiber dispersions for making uniform glass fiber mats by the wet-laid process
Inventor:
Paritosh M. Chakrabarti
Patented Case
View Patent ↗
Granted: Dec 18, 1979
Filed: Nov 15, 1977
Inventor
Paritosh M. Chakrabarti
Assignee (at issue)
GAF Corporation
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.