Talk:Brass instrument valve
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Added Picture
[edit]Added picture of trumpet valve stystem. --Katzyxx (talk) 14:00, 1 December 2012 (UTC)
Joseph Riedl
[edit]The inventor's name of the rotary valve is "Joseph Riedl" from Vienna (Austria). The name in this article Joseph Riedlin is wrong -> see German Wiki. 178.115.54.247 (talk) 07:46, 3 March 2025 (UTC)