Granted Patent
Utility
US 6,568,547 · App. 09/857,329
Crane, especially a self-propelled crane
Inventors:
Manfred Kretschmer, Alfons Weckbecker
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Jun 4, 2001
Inventors
Manfred Kretschmer
Alfons Weckbecker
Assignee (at issue)
Atecs 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.