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Inventor
REN DEHONG
CN
2 patents
Patents
2 patents
US11134610B2
Oct 5, 2021
Grass cutting head and grass trimmer using the same
NANJING CHERVON IND CO LTD
5 citations
68
US11937541B2
Mar 26, 2024
Grass cutting head and grass trimmer using the same
NANJING CHERVON IND CO LTD
0 citations
57