Granted Patent
Utility
US 6,722,692 · App. 10/019,224
Falling shock absorbing device for wheelchair
Inventors:
Kiyoshi Fukaya, Mitsuya Uchida, Fumio Hosoya, Hidemi Taniuchi, Norihiko Shiratori
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Dec 28, 2001
Inventors
Kiyoshi Fukaya
Mitsuya Uchida
Fumio Hosoya
Hidemi Taniuchi
Norihiko Shiratori
Assignees (at issue)
National Institute of Industrial Safety Independent Administrative Institution
Osamu Tanaka
PROP CO., LTD.
SHINKO HOLDINGS CO., LTD.
MICROSTONE 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.