| 摘要 |
<p>APPARATUS FOR EXERTING PRESSURE ON SEVERAL STRINGS OF A STRINGED INSTRUMENT SIMULTANEOUSLY BY OPERATION OF A PUSHBUTTON WHICH TRANSMITS EITHER HYDRAU LICALLY OR PNEUMATICALLY OR BY FLEXIBLE CABLE THE TOUCH FROM A SINGLE FINGER, HENCE A SINGLE PUSHBUTTON, TO SEVERAL STRINGS OF A STRINGED INSTRUMENT FOR SUCH PURPOSES AS THE PLAYING OF A CHORD.</p> |
