Granted Patent
Utility
US 6,454,079 · App. 09/880,113
Variable-speed moving walkway
Inventor:
Katsuya Teramoto
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Jun 14, 2001
Inventor
Katsuya Teramoto
Assignees (at issue)
Ishikawajima Transport Machinery Co., Ltd.
TOKAI RUBBER INDUSTRIES, LTD.
ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES CO., 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.