Ring puzzle

Details Ring puzzle Ring puzzle

1997-07-03

1999-11-23

Simone, Dominic

Games, toys, and sports goods

Toy

Coordination or hand-manipulative type

2101

Patent

active

D04169506

REFERENCES:
patent: D54759 (1920-03-01), Marr
patent: D305784 (1990-01-01), Bertagnoli
patent: D339614 (1993-09-01), Ren
patent: 1133061 (1915-03-01), Quarles
patent: 3000901 (1961-01-01), Flores
patent: 4036504 (1977-07-01), Touchette

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