Granted Patent
Utility
US 5,776,876 · App. 08/683,168
Aqueous acidic filter cleaning composition for removing organic biguanide deposits
Inventor:
John P. Garris
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Jul 18, 1996
Inventor
John P. Garris
Assignee (at issue)
BIO-LAB, INC.
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.