Granted Patent
Utility
US 6,826,366 · App. 10/101,962
Lock device for accessory-grip
Inventors:
Hidefumi Kaneko, Katsuki Machida
Patented Case
View Patent ↗
Granted: Nov 30, 2004
Filed: Mar 21, 2002
Inventors
Hidefumi Kaneko
Katsuki Machida
Assignee (at issue)
Pentax Corporation
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.