Invention Grant
- Patent Title: Roll mechanism for automatic players.
- Patent Title (中): 自动播放机的滚动机制。
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Application No.: US1906337758Application Date: 1906-10-06
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Publication No.: US837610APublication Date: 1906-12-04
- Inventor: CRIPPEN WALTER R
- Applicant: EMERSON PIANO COMPANY
- Assignee: Emerson Piano Company
- Current Assignee: Emerson Piano Company
- Priority: US1906337758 1906-10-06
Information query
