ATTITUDE ANGLE MEASURING INSTRUMENT AND ATTITUDE ANGLE MEASURING METHOD USED FOR THAT ATTITUDE ANGLE MEASURING INSTRUMENT 姿勢角計測装置及び該姿勢角計測装置に用いられる姿勢角計測方法 - 特許庁
METHOD FOR SETTING ATTACHING ANGLE OF CUTTING BLADE カット刃の取付け角度設定方法 - 特許庁
SIGNAL JUDGING METHOD OF TURNING ANGLE SENSOR 回転角センサの信号判別方法 - 特許庁
OBLIQUE ANGLE MEASURING DEVICE AND OBLIQUE ANGLE MEASURING METHOD FOR BATTER PILE, AND PENETRATION METHOD FOR PILE 斜杭の斜角測定装置、斜角測定方法及び杭の貫入方法 - 特許庁