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Serial No. 79426042
Serial No. 79426042
- Owner
- Hebei Longfengshan New Materials Technology (Group) Co.,Ltd.
- Status date
- Mar 16, 2026
Status 641 means the USPTO mailed a non-final Office Action identifying issues with your application. You typically have three months to respond with arguments, amendments, or evidence. Missing the deadline can abandon the application.
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