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公开(公告)号:US1402154A
公开(公告)日:1922-01-03
申请号:US29702619
申请日:1919-05-14
Applicant: EMERY ELIZABETH R
Inventor: EMERY ELIZABETH R
IPC: D06F79/00
CPC classification number: D06F79/00
公开(公告)号:US1402154A
公开(公告)日:1922-01-03
申请号:US29702619
申请日:1919-05-14
Applicant: EMERY ELIZABETH R
Inventor: EMERY ELIZABETH R
IPC: D06F79/00
CPC classification number: D06F79/00