File:Ludwig 1909 pedal patent.jpg
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DescriptionLudwig 1909 pedal patent.jpg |
English: Drawing of the first William F. Ludwig pedal patent: Drum and cymbal playing apparatus. |
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Date | ||||
Source | U.S. Patent 922706 | |||
Author | William F. Ludwig | |||
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current | 13:53, 27 June 2012 | 1,280 × 2,059 (811 KB) | Lobo (talk | contribs) | {{Information |Description={{en|Drawing of the first William F. Ludwig pedal patent: ''Drum and cymbal playing apparatus''.}} |Source=U.S. Patent 922706 |Date={{date|1909|05|25}} |Author=William F. Ludwig |Permission={{PD-US-patent}} |other_versions= }... |
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