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公开(公告)号:US1434162A
公开(公告)日:1922-10-31
申请号:US36610520
申请日:1920-03-15
Applicant: SWAN SMITH
Inventor: SWAN SMITH
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公开(公告)号:US1735340A
公开(公告)日:1929-11-12
申请号:US19727527
申请日:1927-06-08
Applicant: SWAN SMITH
Inventor: SWAN SMITH
IPC: B31F1/07
CPC classification number: B31F1/07 , B31F2201/0723 , B31F2201/0753 , B31F2201/0782 , B31F2201/0784 , B31F2201/0794
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