USD924322SActiveUtility
Teaching aid
Est. expiryAug 17, 2035(~9.1 yrs left)· nominal 20-yr term from priority
G09B 5/02A47L 13/51A47L 13/16G09B 29/003G09B 19/003
73
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The ornamental design for a teaching aid, as shown and described.Cited by (0)
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