Invention Grant US2007394A Lever system 失效 Basic information Please log in to see more content Basic information Please log in to see more content Lever system Patent Title: Lever system Application No.: US59795632 Application Date: 1932-03-10 Publication No.: US2007394A Publication Date: 1935-07-09 Inventor: WILLIAM GUMPRICH Applicant: IBM Assignee: Ibm Current Assignee: Ibm Priority: US59795632 1932-03-10 Main IPC: G01G21/00 IPC: G01G21/00 Information query Espacenet IPC分类: G 物理 G01 测量；测试 G01G 称量 G01G21/00 称量仪器的零部件
