Floor-polishing machine

申请公布号：US1773993(A)

申请号：US19270232675

申请日期：1927.11.11

申请公布日期：1930.08.26

申请人：

ERNEST J. NEWCOMER

发明人：GILLIS LYLE N.

分类号：A47L11/162

主分类号：A47L11/162

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SEMICONDUCTOR DEVICE

CONNECTOR

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