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Invention Grant
US1133447A Current-rectifying system. 失效
电流恢复系统

  • Patent Title: Current-rectifying system.
  • Patent Title (中): 电流恢复系统
  • Application No.: US1907396774
    Application Date: 1907-10-10
  • Publication No.: US1133447A
    Publication Date: 1915-03-30
  • Inventor: SIRCH CHARLES W
  • Applicant: SIRCH CHARLES W
  • Assignee: Charles W Sirch
  • Current Assignee: Charles W Sirch
  • Priority: US1907396774 1907-10-10
Current-rectifying system.
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