Granted Patent
Utility
US 4,653,271 · App. 06/655,215
Boom crane centering
Inventors:
William E. Reeves, Jasper E. Cobb, III
Patented Case
View Patent ↗
Granted: Mar 31, 1987
Filed: Sep 27, 1984
Inventors
William E. Reeves
Jasper E. Cobb, III
Assignee (at issue)
Armco 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.