Patent Assignment Abstract of Title
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Total Assignments:
1
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Patent #:
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Issue Dt:
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05/07/2024
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Application #:
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17759149
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Filing Dt:
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11/21/2023
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Publication #:
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Pub Dt:
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03/14/2024
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Inventors:
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Yongwang LIU, Sen WEI, Zhichuan GUAN, Deyong ZOU
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Title:
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BOTTOM-HOLE IMPACT-ROTATION STEPPING COMBINED UNLOADING ROCK-BREAKING EFFICIENT DRILLING SYSTEM AND METHOD THEREOF
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Assignment:
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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NO.66 CHANGJIANG WEST ROAD, HUANGDAO DISTRICT |
SHANDONG |
QINGDAO CITY, CHINA 266580 |
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HAUPTMAN HAM, LLP |
2318 MILL ROAD, SUITE 1400 |
ALEXANDRIA, VA 22314 |
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06/19/2024 09:23 PM
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