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			 The ornamental design for a cat tree tower, as shown and described. 
			  
			  
			  
			  
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The broken lines in the figures illustrate portions of the cat tree tower that form no part of the claimed design.
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| ER4923, | |||
| ER8955, | |||
| ER9889, | 
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Aug 12 2022 | Hangzhou Zhuoli Industrial Co., Ltd. | (assignment on the face of the patent) | / | |||
| Jan 30 2023 | WANG, XIAOWEI | HANGZHOU ZHUOLI INDUSTRIAL CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 062533 | /0120 | 
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