Granted Patent
Utility
US 6,709,076 · App. 10/166,384
Elastic crawler and method of producing the same
Inventor:
Kenichi Sakai
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Jun 11, 2002
Inventor
Kenichi Sakai
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.