Granted Patent
Utility
US 6,131,751 · App. 08/845,843
Counter weight handling system and boom parking device
Inventors:
David J. Pech, Alan E. Pleuss, Kenneth J. Porubcansky
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Apr 23, 1997
Inventors
David J. Pech
Alan E. Pleuss
Kenneth J. Porubcansky
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.