Patent Assignment Abstract of Title
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Total Assignments:
1
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Patent #:
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NONE
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Issue Dt:
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Application #:
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18031338
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Filing Dt:
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04/11/2023
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Publication #:
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Pub Dt:
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11/02/2023
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PCT #:
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CN2020128174
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Inventors:
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Xin ZHENG, Hanquan CHEN
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Title:
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METHOD OF USING A DRILL BIT AND METHOD OF PREPARING A DRILL BIT
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| NO. 12, YIHENG SOUTH ROAD |
| CHILING INDUSTRIAL ZONE, HOUJIE TOWN, GUANGDONG |
| DONGGUAN, CHINA 523940 |
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| MATTHEW J. SPARK |
| 350 S. GRAND AVE., 32ND FLOOR |
| LOS ANGELES, CA 90071 |
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