Granted Patent
Utility
US 6,531,056 · App. 09/994,596
Chlorination apparatus for controlling material dissolution rate
Inventor:
Carl L. Hammonds
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Nov 16, 2001
Inventor
Carl L. Hammonds
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.