Wêne:Ludwig 1909 pedal patent.jpg

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Danasîn
English: Drawing of the first William F. Ludwig pedal patent: Drum and cymbal playing apparatus.
Dîrok
Çavkanî U.S. Patent 922706
Xwedî William F. Ludwig
Destûr
(Dîsa bikaranînê vê dosyeye)
May or may not be in the public domain
In general, the contents of United States patents are in the public domain.

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A portion of the disclosure of this patent document contains material which is subject to (copyright or mask work) protection. The (copyright or mask work) owner has no objection to the facsimile reproduction by any­one of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all (copyright or mask work) rights whatsoever.

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dema avabûnê Kurdish (Latin script) (transliterated)

25 gulan 1909Gregorian

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niha13:53, 27 hezîran 2012Versiyona biçûkkirî yê 13:53, 27 hezîran 20121280 x 2059 (811 KB)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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