> > CFT Steinway invented the duplex > > scale in 1872, and millions of pianos have been produced usiding this > design > > or variations of it...... > >Someone invented the Ford Pinto & sold millions also. Quantity does not >define a good idea. > >Terry Farrell And speaking of Fords, Dan, have you looked up the patent number (13960) Phil Ford posted for a tuned rear duplex system that was patented 17 years before CFT's? Ron N
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