USD457649SExpiredUtility

Safe grating door

43
Assignee: TUNG PANG IND CO LTDPriority: Aug 30, 2000Filed: Aug 30, 2000Granted: May 21, 2002
Est. expiryAug 30, 2020(expired)· nominal 20-yr term from priority
Inventors:Ming Yang
43
PatentIndex Score
6
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a safe grating door, as shown and described.

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