Granted Patent
Utility
US 6,722,746 · App. 10/356,502
Resilient crawler and method of manufacturing the same
Inventors:
Teruyuki Katayama, Yasuharu Fukushima, Kenichi Sakai
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Feb 3, 2003
Inventors
Teruyuki Katayama
Yasuharu Fukushima
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.