Granted Patent
Utility
US 6,698,850 · App. 10/173,118
Elastic crawler traveling apparatus and sprocket for crawler belt used in the same
Inventor:
Yoshio Ueno
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: Jun 18, 2002
Inventor
Yoshio Ueno
Assignee (at issue)
SUMITOMO RUBBER INDUSTRIES, LTD.
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.