Toy building block
Latest Shanghai Putao Technology Co., Ltd. Patents:
Description
The dashed broken lines in the figures show portions of the toy building block that form no part of the claimed design.
The dot-dash broken lines in the figures show boundaries that form no part of the claimed design.
Claims
The ornamental design for a toy building block, as shown and described.
Referenced Cited
U.S. Patent Documents
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Patent History
Patent number: D878484
Type: Grant
Filed: Feb 23, 2018
Date of Patent: Mar 17, 2020
Assignee: Shanghai Putao Technology Co., Ltd. (Shanghai)
Inventors: Lei Xie (Shanghai), Xiang Zhang (Shanghai)
Primary Examiner: Cynthia M. Chin
Application Number: 29/638,013
Type: Grant
Filed: Feb 23, 2018
Date of Patent: Mar 17, 2020
Assignee: Shanghai Putao Technology Co., Ltd. (Shanghai)
Inventors: Lei Xie (Shanghai), Xiang Zhang (Shanghai)
Primary Examiner: Cynthia M. Chin
Application Number: 29/638,013
Classifications
Current U.S. Class:
Curved Surface (D21/503)