Musical instruments – Keyboard type
Patent
1991-03-20
1993-12-07
Feifer, Melvin B.
Musical instruments
Keyboard type
D17 5
Patent
active
D03420868
REFERENCES:
patent: D258899 (1981-04-01), Hayama et al.
patent: D260097 (1981-08-01), Antonelli
patent: D313034 (1990-12-01), Koide
patent: D313035 (1990-12-01), Katsuhara
patent: D316722 (1991-05-01), Lerch
The Music Trades, Jan. 1988 p. 18 (Korg 707).
The Music Trades, Sep. 1988 p. 17 (Roland Tr-626).
Jaeb Michael S.
Stropkay Scott
Aronovich Adir
Feifer Melvin B.
Leading Technology, Inc.
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