Wire feeder

申请公布号：US2252561(A)

申请号：US19400357353

申请日期：1940.09.19

申请公布日期：1941.08.12

申请人：

RADIO CORPORATION

发明人：ENGEL WILLIAM T.

分类号：H01J9/46

主分类号：H01J9/46

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