Granted Patent
Utility
US 4,426,156 · App. 06/407,688
Polyelectrolyte wetting apparatus
Inventors:
Rosario Adamo, Arthur H. Patch
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Aug 13, 1982
Inventors
Rosario Adamo
Arthur H. Patch
Assignee (at issue)
Pennwalt 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.