USD653290SActiveUtility

Teaching tool for chemical elements

Assignee: HAN CHONG-SOOPriority: Nov 19, 2010Filed: Mar 25, 2011Granted: Jan 31, 2012

Est. expiryNov 19, 2030(~4.3 yrs left)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a teaching tool for chemical elements, as shown and described.

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