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Invention Grant
US1155095A Electrical measuring instrument. 失效

  • Patent Title: Electrical measuring instrument.
  • Application No.: US1914863475
    Application Date: 1914-09-25
  • Publication No.: US1155095A
    Publication Date: 1915-09-28
  • Inventor: PORTER WILLARD E
  • Applicant: GEN ELECTRIC
  • Assignee: Gen Electric
  • Current Assignee: Gen Electric
  • Priority: US1914863475 1914-09-25
Electrical measuring instrument.
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