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公开(公告)号:US863961A
公开(公告)日:1907-08-20
申请号:US1906337973
申请日:1906-10-08
Applicant: CHARLES L ELYEA , ALEXANDER WILLIAM D
Inventor: ALEXANDER WILLIAM D
CPC classification number: G11B33/0483
公开(公告)号:US863961A
公开(公告)日:1907-08-20
申请号:US1906337973
申请日:1906-10-08
Applicant: CHARLES L ELYEA , ALEXANDER WILLIAM D
Inventor: ALEXANDER WILLIAM D
CPC classification number: G11B33/0483