Assignee

Chen yong jia

CN·2 granted patents·0 citations·filing 2021–2022

Technology mixB05D2 B26F2 B32B2 B41K2 B44B2 B44C2

Top patents by PatentIndex Score

2 records

0160US12208636B2Multi-purpose acid-etched metallic stamps and diesChen yong jia·Filed 2022·Granted Jan 28, 2025·0 cites·13 claims
0257US11602945B2Multi-purpose acid-etched metallic stamps and diesChen yong jia·Filed 2021·Granted Mar 14, 2023·0 cites·11 claims

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