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Invention Grant
US969028A Reversible percolator. 失效
可逆的PERCOLATOR。

  • Patent Title: Reversible percolator.
  • Patent Title (中): 可逆的PERCOLATOR。
  • Application No.: US1910550114
    Application Date: 1910-03-18
  • Publication No.: US969028A
    Publication Date: 1910-08-30
  • Inventor: BERG JOHN
  • Applicant: BERG JOHN
  • Assignee: John Berg
  • Current Assignee: John Berg
  • Priority: US1910550114 1910-03-18
Reversible percolator.
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