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公开(公告)号:US2136629A
公开(公告)日:1938-11-15
申请号:US8769236
申请日:1936-06-27
Applicant: WESTERN ELECTRIC CO
Inventor: MASON SUMNER R
IPC: C25D3/24
CPC classification number: C25D3/24
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公开(公告)号:US1337718A
公开(公告)日:1920-04-20
申请号:US25247418
申请日:1918-09-03
Applicant: WESTERN ELECTRIC CO
Inventor: MASON SUMNER R
IPC: C25F1/00
CPC classification number: C25F1/00
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公开(公告)号:US2185858A
公开(公告)日:1940-01-02
申请号:US8769336
申请日:1936-06-27
Applicant: WESTERN ELECTRIC CO
Inventor: MASON SUMNER R
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公开(公告)号:US2020477A
公开(公告)日:1935-11-12
申请号:US69542033
申请日:1933-10-27
Applicant: WESTERN ELECTRIC CO
Inventor: SCOTT WALTER J , MASON SUMNER R
IPC: C23D3/00
CPC classification number: C23D3/00 , Y10S428/927 , Y10S428/935 , Y10T428/12243 , Y10T428/12389 , Y10T428/12604
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