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Keyboard for musical instruments
US 2,701,498 A
Filed
: 12/21/1949
Issued
: 02/08/1955
Est. Priority Date
: 12/21/1949
Status: Expired due to Term
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7
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7 Citations
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Current Assignee
Friedrich Feilhaber
,
Siegfried Koch
Original Assignee
Friedrich Feilhaber
,
Siegfried Koch
Inventors
SIEGFRIED KOCH
,
FRIEDRICH FEILHABER
Application Number
US03/134,164
Time in Patent Office
1,875 Days
Field of Search
US Class Current
84/423.00R
CPC Class Codes
G10C 3/12
Keyboards; Keys
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