USD538855SExpiredUtility

Teaching aid

37
Assignee: HINKLER BOOKS PTY LTDPriority: Sep 22, 2004Filed: Jan 19, 2005Granted: Mar 20, 2007
Est. expirySep 22, 2024(expired)· nominal 20-yr term from priority
Inventors:Stephen D. Ungar
37
PatentIndex Score
5
Cited by
11
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       The ornamental design for teaching aid, as shown and described.

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