Granted Patent
Utility
US 6,170,180 · App. 09/266,865
Excavator, in particular a mini-excavator
Inventor:
Hans Schaeff
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Mar 12, 1999
Inventor
Hans Schaeff
Assignee (at issue)
Karl Schaeff GmbH & Co Maschinenfabrik
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.