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Yonggan Ha
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Surrey, CA
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Patents Grants
last 30 patents
Information
Patent Grant
Jaw crusher
Patent number
7,143,970
Issue date
Dec 5, 2006
Yonggan Ha
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information
Patent Grant
Rock crushing apparatus and method
Patent number
5,482,218
Issue date
Jan 9, 1996
Yonggan Ha
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Patents Applications
last 30 patents
Information
Patent Application
Jaw crusher
Publication number
20040129814
Publication date
Jul 8, 2004
Yonggan Ha
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...