Ring mandrel

Details Ring mandrel Ring mandrel

2008-12-22

2009-08-25

Davis, Antoine D (Department: 2915)

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Design Patent

active

D0598791

CLAIM:
The ornamental design for a ring mandrel, as shown and described.

REFERENCES:
patent: 518921 (1894-04-01), Hope

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