Granted Patent
Utility
US 4,568,232 · App. 06/449,328
Barge mounted horizontal boom bulk unloader
Inventors:
Louis F. Ray, Richard J. Juelich
Patented Case
View Patent ↗
Granted: Feb 4, 1986
Filed: Dec 13, 1982
Inventors
Louis F. Ray
Richard J. Juelich
Assignee (at issue)
American Hoist and Derrick Company
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.