Granted Patent
Utility
US 4,699,326 · App. 06/804,338
Vertical shaft impact crusher with split tub
Inventor:
Gary Warren
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: Dec 5, 1985
Inventor
Gary Warren
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.