Granted Patent
Utility
US 6,126,824 · App. 09/172,833
Scum removal system for liquid treatment tank
Inventors:
Robert E. Hanford, Peter J. Bsumek, William C. Stewart
Patented Case
View Patent ↗
Granted: Oct 3, 2000
Filed: Oct 15, 1998
Inventors
Robert E. Hanford
Peter J. Bsumek
William C. Stewart
Assignee (at issue)
Baker Hughes Holdings LLC
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.