Granted Patent
Utility
US 4,885,693 · App. 07/245,493
Wheel-slip detection system
Inventors:
Asaji Imanaka, Tatsuo Fujiwara, Shuichi Osaka
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Sep 19, 1988
Inventors
Asaji Imanaka
Tatsuo Fujiwara
Shuichi Osaka
Assignee (at issue)
Nippon Air Brake 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.