Granted Patent
Utility
US 4,248,690 · App. 06/115,644
Apparatus for production of sodium hypochlorite
Inventor:
William C. Conkling
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Jan 28, 1980
Inventor
William C. Conkling
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.