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Teaching tool for chemical elements

68
Assignee: HAN CHONG-SOOPriority: Nov 19, 2010Filed: Mar 25, 2011Granted: Jan 31, 2012
Est. expiryNov 19, 2030(~4.4 yrs left)· nominal 20-yr term from priority
Inventors:Chong HanSunah Kim
68
PatentIndex Score
19
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29
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1
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Claims

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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