Granted Patent
Utility
US 5,875,981 · App. 08/874,018
Gyratory crusher having tramp iron relief system
Inventors:
William A. Ganser, IV, Joseph E. Musil, Donald W. Henry, Mark Lawrence Hunt, David A. Ostergaard, John C. Vendelin, Peter Alford, Roger M. Clark, Jon Juhlin, James Mitchell, Gerald E. Parker
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: Jun 12, 1997
Inventors
William A. Ganser, IV
Joseph E. Musil
Donald W. Henry
Mark Lawrence Hunt
David A. Ostergaard
John C. Vendelin
Peter Alford
Roger M. Clark
Jon Juhlin
James Mitchell
Gerald E. Parker
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.