Granted Patent
Utility
US 4,689,127 · App. 06/830,383
Control of anodic passivation systems
Inventor:
Donald R. McAlister
Patented Case
View Patent ↗
Granted: Aug 25, 1987
Filed: Feb 14, 1986
Inventor
Donald R. McAlister
Assignee (at issue)
Monsanto 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.