Granted Patent
Utility
US 4,598,875 · App. 06/241,577
Portable crushing and screening plant
Inventors:
Larry D. Bronson, Egbert Couperus
Patented Case
View Patent ↗
Granted: Jul 8, 1986
Filed: Mar 9, 1981
Inventors
Larry D. Bronson
Egbert Couperus
Assignee (at issue)
Allis-Chalmers 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.