A battery tester is described that can measure the life of a battery without requiring direct access to or removal of the battery from the musical instrument or effects box in which the battery is installed.
申请公布号
US2010090702(A1)
申请公布日期
2010.04.15
申请号
US20090436614
申请日期
2009.05.06
申请人
KESUMO LLC
发明人
MCMILLEN KEITH;WIDNEY DOUGLAS F.;SAPUTELLI DENNIS A.
