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公开(公告)号:US2277668A
公开(公告)日:1942-03-31
申请号:US23578238
申请日:1938-10-19
Applicant: DU PONT
Inventor: RUEBENSAAL CLAYTON F
IPC: C25D3/22
CPC classification number: C25D3/22
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公开(公告)号:US2312097A
公开(公告)日:1943-02-23
申请号:US28551239
申请日:1939-07-20
Applicant: DU PONT
Inventor: HULL RICHARD O , RUEBENSAAL CLAYTON F
IPC: C25D3/12
CPC classification number: C25D3/12
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