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1.Bellows-actuating mechanism for musical instruments. 失效
Title translation: 用于音乐仪器的BELLOWS-ACTUATING机制。公开(公告)号:US1083136A
公开(公告)日:1913-12-30
申请号:US1912711422
申请日:1912-07-25
Applicant: RAWLS JAMES POLK
Inventor: RAWLS JAMES POLK
CPC classification number: F03G5/00