USD427972SExpiredUtility

Negative electrode for spark plug

Assignee: PARKER KEVIN RAYPriority: Dec 16, 1997Filed: Dec 16, 1997Granted: Jul 11, 2000

Est. expiryDec 16, 2017(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a negative electrode for spark plug, as shown and described.

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