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公开(公告)号:US1206894A
公开(公告)日:1916-12-05
申请号:US9577216
申请日:1916-05-06
Applicant: HARTFORD RUBBER WORKS CO
Inventor: NETTLETON GEORGE E
CPC classification number: G05G1/10
公开(公告)号:US1206894A
公开(公告)日:1916-12-05
申请号:US9577216
申请日:1916-05-06
Applicant: HARTFORD RUBBER WORKS CO
Inventor: NETTLETON GEORGE E
CPC classification number: G05G1/10