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Invention Grant
US814802A Combination draft-excluder and lock. 失效
组合草案和锁定。

  • Patent Title: Combination draft-excluder and lock.
  • Patent Title (中): 组合草案和锁定。
  • Application No.: US1905260626
    Application Date: 1905-05-16
  • Publication No.: US814802A
    Publication Date: 1906-03-13
  • Inventor: POTTER WILLIAM
  • Applicant: POTTER WILLIAM
  • Assignee: William Potter
  • Current Assignee: William Potter
  • Priority: US1905260626 1905-05-16
Combination draft-excluder and lock.
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