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公开(公告)号：US2068892A
公开(公告)日：1937-01-26
申请号：US61572232
申请日：1932-06-06
Applicant: US QUARRY TILE COMPANY
Inventor： SCHWEITZER HOWARD V , CABLE DAVIS A
IPC: B05B7/20
CPC classification number: B05B7/201
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