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公开(公告)号:US1327502A
公开(公告)日:1920-01-06
申请号:US19637217
申请日:1917-10-13
Applicant: SPLITDORF ELECTRICAL CO
Inventor: DEVENTER HARRY RANDOLPH VAN
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公开(公告)号:US1327502A
公开(公告)日:1920-01-06
申请号:US19637217
申请日:1917-10-13
Applicant: SPLITDORF ELECTRICAL CO
Inventor: DEVENTER HARRY RANDOLPH VAN