Paradoxical structural puzzle

Games – toys – and sports goods – Toy – Coordination or hand-manipulative type

Design Patent

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Design Patent

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D0465534

CLAIM:
The ornamental design for a paradoxical structural puzzle, as shown and described.

REFERENCES:
patent: D230874 (1974-03-01), Baynes
patent: 3813841 (1974-06-01), Tsurumi
patent: D302709 (1989-08-01), Thompson
patent: D307452 (1990-04-01), Laubscher
patent: D375329 (1996-11-01), Lennon et al.
patent: D397378 (1998-08-01), Lennon et al.

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