File:Ludwig 1909 pedal patent.jpg
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Size of this preview: 372 × 598 pixels. Other resolutions: 149 × 240 pixels | 298 × 480 pixels | 477 × 768 pixels | 636 × 1,024 pixels | 1,280 × 2,059 pixels.
Original file (1,280 × 2,059 pixels, file size: 811 KB, MIME type: image/jpeg)
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:53, 27 June 2012 | | 1,280 × 2,059 (811 KB) | commons>Lobo | {{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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