----- Original Message ----- From: "Steven Kruyswijk" <steven@www2.hku.nl> To: <pianotech@ptg.org> Sent: May 31, 2003 8:42 AM Subject: CP-70/80 patent numbers > Hi all, > > I'm a Dutch Audio Design student (and parttime Rhodes technician) > currently graduating on the subject of the Yamaha CP series > electro-mechanical pianos. > > For my research, I'd really like to read the patents about the > innovations in the CP pianos at www.uspto.gov, but a search there hasn't > been very productive. The online original manuals at > http://www2.yamaha.co.jp/manual/english/index.html weren't much help > either. Steven, You might check on patents issued to The Baldwin Piano & Organ Company. The Yamaha CP-??? series seems to have been based largely on technology developed originally by Baldwin for their disastrous Electro-Piano concept. Brilliant idea, miserable execution. Del
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