Music-leaf turner.

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US1258443A Music-leaf turner. 失效

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Patent Title: Music-leaf turner.
Application No.: US16871417

Application Date: 1917-05-15
Publication No.: US1258443A

Publication Date: 1918-03-05
Inventor: PATTERSON CLYDE R
Applicant: PATTERSON CLYDE R
Assignee: Clyde R Patterson
Current Assignee: Clyde R Patterson
Priority: US16871417 1917-05-15

Music-leaf turner.

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US11477328B2 PTP-based audio clock synchronization and alignment for acoustic echo cancellation in a conferencing system with IP-connected cameras, microphones and speakers Public/Granted day:2022-10-18

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