Heart-shaped musical instrument

Musical instruments – Wind instrument

Patent

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Details

D21 64, 84330, 1702

Patent

active

D03898555

REFERENCES:
patent: D142799 (1945-11-01), Thompson
patent: D162191 (1951-02-01), Lippman
patent: D339384 (1993-09-01), Seifan
patent: D368485 (1996-04-01), Paulus
patent: 2388495 (1945-11-01), Osterholt
patent: 4180537 (1979-12-01), Danova
Tarq & Dinner Catalog, 1970 p.406 (Ocarina Quartette).

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