Granted Patent
Utility
US 6,206,213 · App. 09/559,517
Crane with a luffing jib
Inventor:
Frank Conrad
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: Apr 27, 2000
Inventor
Frank Conrad
Assignee (at issue)
Mannesmann AG
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.