Granted Patent
Utility
US 6,700,508 · App. 09/524,470
Thin keyboard unit capable of making large the stroke of a key top
Inventors:
Hiroo Nomura, Yuichi Yasuda, Yoshihisa Endo
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: Mar 13, 2000
Inventors
Hiroo Nomura
Yuichi Yasuda
Yoshihisa Endo
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.