Granted Patent
Utility
US 6,580,415 · App. 09/639,481
Input device of detecting acceleration
Inventors:
Katsumi Kato, Yasuji Hagiwara
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Aug 15, 2000
Inventors
Katsumi Kato
Yasuji Hagiwara
Assignee (at issue)
ALPS ELECTRIC CO., 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.