Granted Patent
Utility
US 6,035,685 · App. 08/380,125
Rolling unit
Inventors:
Yoshikazu Takai, Hideo Kobayashi, Yoshio Kato, Tatsuya Ishihama, Harold E. Woodrow
Patented Case
View Patent ↗
Granted: Mar 14, 2000
Filed: Jan 30, 1995
Inventors
Yoshikazu Takai
Hideo Kobayashi
Yoshio Kato
Tatsuya Ishihama
Harold E. Woodrow
Assignees (at issue)
Morgan Construction Company
DAIDO STEEL 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.