Granted Patent
Utility
US 6,774,321 · App. 10/675,551
Multi-stage push operating switch device, allowing acquisition of clear click feeling
Inventors:
Shinji Komatsu, Mikio Sasaki
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Sep 30, 2003
Inventors
Shinji Komatsu
Mikio Sasaki
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.