Granted Patent
Utility
US 6,356,258 · App. 09/117,288
Keypad
Inventors:
Yoshiya Kato, Syunji Kato
Patented Case
View Patent ↗
Granted: Mar 12, 2002
Filed: Oct 19, 1998
Inventors
Yoshiya Kato
Syunji Kato
Assignees (at issue)
Misawa Homes Co., Ltd.
Syunji Kato
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.