Granted Patent
Utility
US 5,931,394 · App. 09/050,493
Anti-spin mechanism for gyratory crusher
Inventors:
Matthew Haven, James C. Bremer
Patented Case
View Patent ↗
Granted: Aug 3, 1999
Filed: Mar 30, 1998
Inventors
Matthew Haven
James C. Bremer
Assignee (at issue)
Astec Industries, 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.