Granted Patent
Utility
US 4,432,102 · App. 06/313,408
Dispensing package for automatically releasing a controlled amount of an additive solution into a water tank and bowl
Inventors:
Keith Woodruff, Arturo A. Villamarin
Patented Case
View Patent ↗
Granted: Feb 21, 1984
Filed: Oct 21, 1981
Inventors
Keith Woodruff
Arturo A. Villamarin
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.