Sound-box for talking-machines.

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US831546A Sound-box for talking-machines. 失效

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Patent Title: Sound-box for talking-machines.
Application No.: US1905256590

Application Date: 1905-04-20
Publication No.: US831546A

Publication Date: 1906-09-25
Inventor: DOUGLASS LEON F
Applicant: VICTOR TALKING MACHINE CO
Assignee: Victor Talking Machine Co
Current Assignee: Victor Talking Machine Co
Priority: US1905256590 1905-04-20

Sound-box for talking-machines.

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