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Invention Grant
US1809166A Apparatus for automatic water softeners and chemical feeds therefor 失效
自动软水机和化学饲料设备

  • Patent Title: Apparatus for automatic water softeners and chemical feeds therefor
  • Patent Title (中): 自动软水机和化学饲料设备
  • Application No.: US30077928
    Application Date: 1928-08-20
  • Publication No.: US1809166A
    Publication Date: 1931-06-09
  • Inventor: HENRY EARL S
  • Applicant: HENRY EARL S
  • Assignee: Earl S Henry
  • Current Assignee: Earl S Henry
  • Priority: US30077928 1928-08-20
  • Main IPC: C02F1/68
  • IPC: C02F1/68
Apparatus for automatic water softeners and chemical feeds therefor
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