Invention Grant US3125890A Drive mechanism 失效 Basic information Please log in to see more content Basic information Please log in to see more content Drive mechanism Patent Title: Drive mechanism Application No.: US3125890D Application Date: Publication No.: US3125890A Publication Date: 1964-03-24 Main IPC: G04C1/00 IPC: G04C1/00 ; G04C3/10 ; G06M1/04 Information query Espacenet IPC分类: G 物理 G04 测时学 G04C 电动机械钟或表（一般钟表的机械零部件入G04B；无传动零件的电子计时器，产生定时脉冲的电子电路系统入G04G） G04C1/00 机械时钟的电动上发条（机械上发条入G04B3/00）
