Granted Patent
Utility
US 4,331,418 · App. 06/182,144
Double masted warehouse crane
Inventor:
Herbert F. Klebe
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: Aug 28, 1980
Inventor
Herbert F. Klebe
Assignee (at issue)
Harnischfeger 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.