Musical drum sound projector

Details Musical drum sound projector Musical drum sound projector

1976-11-08

1979-01-30

Stearman, Joel

Musical instruments

Percussion instrument

D1704

Patent

active

D02509717

REFERENCES:
patent: D231797 (1974-06-01), Hoey
patent: 913796 (1909-03-01), Wolff
patent: 1020717 (1912-03-01), Schlesinger
patent: 3724313 (1973-04-01), Frigo et al.

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