Granted Patent
Utility
US 6,489,874 · App. 09/911,471
Non-contact electric power transmission apparatus
Inventors:
Yoshinori Katsura, Mikihiro Yamashita
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Jul 25, 2001
Inventors
Yoshinori Katsura
Mikihiro Yamashita
Assignee (at issue)
Matsushita Electric Works, 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.