Invention Grant
US766991A Propelling railway-cars synchronous electric motors. 失效
螺旋桨车同步电动马达。

  • Patent Title: Propelling railway-cars synchronous electric motors.
  • Patent Title (中): 螺旋桨车同步电动马达。
  • Application No.: US1902126900
    Application Date: 1902-10-11
  • Publication No.: US766991A
    Publication Date: 1904-08-09
  • Inventor: CHURCHWARD ALEXANDER
  • Applicant: GEN ELECTRIC
  • Assignee: Gen Electric
  • Current Assignee: Gen Electric
  • Priority: US1902126900 1902-10-11
Propelling railway-cars synchronous electric motors.
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