Granted Patent
Utility
US 5,350,252 · App. 07/990,504
Single drum multiple soil remediation and classification apparatus and method
Inventors:
Joseph E. Musil, William D. McFarland
Patented Case
View Patent ↗
Granted: Sep 27, 1994
Filed: Dec 15, 1992
Inventors
Joseph E. Musil
William D. McFarland
Assignee (at issue)
Cedarapids, 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.