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Invention Grant
US2000168A Scale base system 失效
基准系统

  • Patent Title: Scale base system
  • Patent Title (中): 基准系统
  • Application No.: US58677732
    Application Date: 1932-01-15
  • Publication No.: US2000168A
    Publication Date: 1935-05-07
  • Inventor: GILBERT WILLIAM N
  • Applicant: IBM
  • Assignee: Ibm
  • Current Assignee: Ibm
  • Priority: US58677732 1932-01-15
  • Main IPC: G01G1/24
  • IPC: G01G1/24 ;  G01G21/23
Scale base system
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