Granted Patent
Utility
US 4,681,816 · App. 06/748,045
Composite laminates comprising a metallic substrate and vibration damper
Inventors:
Mikio Hashimoto, Yoshinari Nakata, Hitoshi Koga
Patented Case
View Patent ↗
Granted: Jul 21, 1987
Filed: Jun 24, 1985
Inventors
Mikio Hashimoto
Yoshinari Nakata
Hitoshi Koga
Assignee (at issue)
Mitsui Petrochemical Industries, 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.