Granted Patent
Utility
US 4,330,407 · App. 06/182,339
Process for clarifying algae-laden waste water stream
Inventors:
David A. Shermer, Parsons Jim, Dale R. Laurance
Patented Case
View Patent ↗
Granted: May 18, 1982
Filed: Aug 29, 1980
Inventors
David A. Shermer
Parsons Jim
Dale R. Laurance
Assignee (at issue)
Olin Corporation
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.