Granted Patent
Utility
US 5,351,908 · App. 08/024,453
Webbing retractor
Inventors:
Yoshio Umezawa, Hisao Yamada
Patented Case
View Patent ↗
Granted: Oct 4, 1994
Filed: Mar 1, 1993
Inventors
Yoshio Umezawa
Hisao Yamada
Assignee (at issue)
MITSUBISHI ELECTRIC 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.