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公开(公告)号:US2702632A
公开(公告)日:1955-02-22
申请号:US10002349
申请日:1949-06-18
Applicant: SHARPLES CORP
Inventor: SCOTT RODERIC M
IPC: B04B5/12
CPC classification number: B04B5/12 , B04B2005/125
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公开(公告)号:US2702630A
公开(公告)日:1955-02-22
申请号:US10002449
申请日:1949-06-18
Applicant: SHARPLES CORP
Inventor: SCOTT RODERIC M
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