Granted Patent
Utility
US 4,455,250 · App. 06/372,770
Stable liquid hard surface cleanser composition containing DGH and a quaternary germicide
Inventor:
Charles Frazier
Patented Case
View Patent ↗
Granted: Jun 19, 1984
Filed: Apr 28, 1982
Inventor
Charles Frazier
Assignee (at issue)
American Cyanamid 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.