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last 30 patents
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Patent Grant
General-purpose multiple-cutting edge drill
Patent number
9,545,676
Issue date
Jan 17, 2017
NINGBO HUAREN TOOLS CO., LTD.
Jianing Sun
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
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Patent Application
GENERAL-PURPOSE MULTIPLE-CUTTING EDGE DRILL
Publication number
20130017029
Publication date
Jan 17, 2013
Jianing Sun
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR