Granted Patent
Utility
US 6,758,356 · App. 08/748,986
Liftcrane with synchronous rope operation
Inventors:
Arthur G. Zuehlke, David J. Pech
Patented Case
View Patent ↗
Granted: Jul 6, 2004
Filed: Nov 14, 1996
Inventors
Arthur G. Zuehlke
David J. Pech
Assignee (at issue)
Manitowoc Crane Companies, LLC
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.