Granted Patent
Utility
US 4,397,396 · App. 06/203,941
Truck crane having an elongated main frame
Inventors:
Christopher G. Kay, John M. Lanning
Patented Case
View Patent ↗
Granted: Aug 9, 1983
Filed: Nov 7, 1980
Inventors
Christopher G. Kay
John M. Lanning
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.