Musical instruments – Keyboard type – Element or attachment
Design Patent
2009-01-30
2010-02-02
Simmons, Ian (Department: 2916)
Musical instruments
Keyboard type
Element or attachment
Design Patent
active
D0609268
CLAIM:
The ornamental design for keyboard practice aid, as shown and described.
REFERENCES:
patent: 291330 (1884-01-01), Giddings
patent: 591800 (1897-10-01), Finnblade et al.
patent: 679288 (1901-07-01), Bohrer
patent: 704343 (1902-07-01), Jones
patent: D301418 (1989-06-01), Wernick
patent: D304270 (1989-10-01), Goldman
patent: 5082258 (1992-01-01), Niks
Flood Tim
Hall Richard
Russell Jeremy
Johnson R.
Myers Bigel & Sibley & Sajovec
Scalerail Limited
Simmons Ian
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