Empty-sensing and pump apparatus for liquid vending machines

申请公布号：US3055551(A)

申请号：US19590823625

申请日期：1959.06.29

申请公布日期：1962.09.25

申请人：

JOHNSON PHILIP A

发明人：JOHNSON PHILIP A.

分类号：G07F9/02

主分类号：G07F9/02

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