发明名称 92 key piano
摘要 A versatile, high performance grand piano includes a keyboard having 92 keys thereon as opposed to the conventional 88 keys found on most pianos. Furthermore, each key hammer strikes four dedicated strings as opposed to the three shared strings found on conventional pianos. The string construction eliminates the need for string sets to be shared with adjacent keys so that tuning or breakage of a string only affects a single key as opposed to adjacent keys.
申请公布号 US6875909(B1) 申请公布日期 2005.04.05
申请号 US20020291355 申请日期 2002.11.08
申请人 CRUZ REYNALDO A. 发明人 CRUZ REYNALDO A.
分类号 G10C1/00;G10C3/12;(IPC1-7):G10C1/00 主分类号 G10C1/00
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