USD911438SActiveUtility

Teaching aid of a non-orientable surface

38
Assignee: GREEN DAVIDPriority: May 15, 2019Filed: May 15, 2019Granted: Feb 23, 2021
Est. expiryMay 15, 2039(~12.8 yrs left)· nominal 20-yr term from priority
Inventors:David Green
38
PatentIndex Score
2
Cited by
17
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       The ornamental design of a teaching aid of a non-orientable surface, as shown and described.

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