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			 The ornamental design for a contact grill, as shown and described. 
			  
			  
			  
			  
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The broken lines in the drawings illustrate portions of the contact grill which form no part of the claimed design.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Jun 22 2017 | LIU, XINMIN | NINGBO BORINE ELECTRIC APPLIANCE CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 043017 | /0147 | |
| Jun 22 2017 | XU, YIWEI | NINGBO BORINE ELECTRIC APPLIANCE CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 043017 | /0147 | |
| Jun 27 2017 | NINGBO BORINE ELECTRIC APPLIANCE CO., LTD. | (assignment on the face of the patent) | / | 
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