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Invention Grant
US653759A Granular-bed filter. 失效
颗粒过滤器

  • Patent Title: Granular-bed filter.
  • Patent Title (中): 颗粒过滤器
  • Application No.: US1900008064
    Application Date: 1900-03-09
  • Publication No.: US653759A
    Publication Date: 1900-07-17
  • Inventor: WEAVER ROBERT T
  • Applicant: WEAVER ROBERT T
  • Assignee: Robert T Weaver
  • Current Assignee: Robert T Weaver
  • Priority: US1900008064 1900-03-09
Granular-bed filter.
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