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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11/17/2020
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Application #:
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16305053
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Filing Dt:
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11/27/2018
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Publication #:
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Pub Dt:
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08/29/2019
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Inventors:
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WEI SONG, XUEWU LONG
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Title:
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Rubber cylinder with rigid seal rings on both ends, packer, and bridge plug
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| ROOM 2003, TOWER C, CHENGMING MANSION |
| NO. 2 XIZHIMENGNEI STREET, XICHENG DISTRICT |
| BEIJING, CHINA 100035 |
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| LOEB & LOEB LLP |
| 321 NORTH CLARK STREET |
| SUITE 2300 |
| CHICAGO, IL 60654 |
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