Granted Patent
Utility
US 6,742,852 · App. 10/181,382
Rubber crawler
Inventors:
Eiji Tsuru, Koji Nakayama
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Jul 17, 2002
Inventors
Eiji Tsuru
Koji Nakayama
Assignee (at issue)
BRIDGESTONE CORPORATION
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.