Granted Patent
Utility
US 6,134,391 · App. 09/335,921
Battery residual-power checking apparatus
Inventor:
Hiroyuki Takahashi
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Jun 18, 1999
Inventor
Hiroyuki Takahashi
Assignee (at issue)
Asahi Kogaku Kogyo Kabushiki Kaisha
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.