Granted Patent
Utility
US 6,569,296 · App. 08/593,507
Ladder anode for cathodic protection of steel reinforcement in atmospherically exposed concrete
Inventors:
John William Burgher, Dennis F. Dong, Richard E. Loftfield
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Jan 30, 1996
Inventors
John William Burgher
Dennis F. Dong
Richard E. Loftfield
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.