Non-cylindrical mandrel

Machines not elsewhere specified – Material working – abrading – or founding machinery – Element or attachment

Design Patent

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Design Patent

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D0529521

CLAIM:
The ornamental design for a non-cylindrical mandrel, as shown and described.

REFERENCES:
patent: 3413391 (1968-11-01), Carroll et al.
patent: 4695241 (1987-09-01), Ventimiglia
patent: 4982687 (1991-01-01), Takahashi et al.
patent: D336094 (1993-06-01), Dejanon
patent: D457899 (2002-05-01), Nam et al.

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