USD503188SExpiredUtility

Myopia prevention device

49
Priority: Sep 9, 2003Filed: Sep 9, 2003Granted: Mar 22, 2005
Est. expirySep 9, 2023(expired)· nominal 20-yr term from priority
Inventors:Chao Lin
49
PatentIndex Score
7
Cited by
8
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for myopia prevention device, as shown and described.

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