Granted Patent
Utility
US 4,385,475 · App. 06/202,350
Combination of hollow member and backing member
Inventor:
Kenichi Nakamura
Patented Case
View Patent ↗
Granted: May 31, 1983
Filed: Oct 30, 1980
Inventor
Kenichi Nakamura
Assignee (at issue)
Yoshida Kogyo K.K.
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.