Title:
Keyboard
United States Patent 2611291
US Patent References:
/0360255.html
- - 0360255

/0888100.html
- - 0888100

Keyboard for musical instruments
- - 2417639


Inventors:
Oskar, Heim
Publication Date:
09/23/1952
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Assignee:
Oskar, Heim
Primary Class:
84/427
Other Classes:
84/451, 84/423R
International Classes:
G10C3/12
Foreign References:
GB185501592A
GB191115800A