Air stone
Description
Claims
The ornamental design for an air stone, as shown and described.
Referenced Cited
U.S. Patent Documents
3507253 | April 1970 | Willinger |
3575350 | April 1971 | Willinger |
D224031 | June 1972 | Willinger |
3746169 | July 1973 | Willinger |
D249897 | October 10, 1978 | Willinger |
4192255 | March 11, 1980 | Willinger |
4655915 | April 7, 1987 | Carpinone |
5034165 | July 23, 1991 | Willinger |
D334086 | March 16, 1993 | Ng |
5669410 | September 23, 1997 | Furuya |
Patent History
Patent number: D1010944
Type: Grant
Filed: May 30, 2022
Date of Patent: Jan 9, 2024
Assignee: Zhongshan Zaomeng Space E-Commerce Co., Ltd. (Zhongshan)
Inventor: Zhicheng Zhang (Zhongshan)
Primary Examiner: Wan Laymon
Application Number: 29/840,534
Type: Grant
Filed: May 30, 2022
Date of Patent: Jan 9, 2024
Assignee: Zhongshan Zaomeng Space E-Commerce Co., Ltd. (Zhongshan)
Inventor: Zhicheng Zhang (Zhongshan)
Primary Examiner: Wan Laymon
Application Number: 29/840,534
Classifications
Current U.S. Class:
Element Or Attachment (D30/106)