Electronic keyboard instrument
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United States of America Patent
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-
Nov 16, 1999
Grant Date -
N/A
app pub date -
Jul 22, 1998
filing date -
Apr 18, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A silent electronic keyboard instrument for operation in conjunction with a synthesizer for transmitting sound only electronically to a headphone terminal, and exhibiting keyboard operation substantially duplicative of acoustic piano keyboard operation.
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