Thanks Mike, Del, for the replies. I don't know why or when the thing was moved to the action, but it's been there for a long time now with no indication it was a patented idea. Seems odd to me that something lying out there in the open, figuratively speaking, unprotected by patent, wouldn't be stolen by at least one manufacturer in all those years unless no one else thought it worth stealing. I'd love to know why someone at Steinway considered it an idea good enough to implement, and worth keeping. Ron N
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