Electric stair chair
Description
Claims
I claim the ornamental design for an electric stair chair, as shown and described.
Referenced Cited
U.S. Patent Documents
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- Amazon, “MS3C . . . Emergency Stair Chair”, May 31, 2019. https://www.amazon.com/dp/B07J2WXZ76/ref=sspa_dk_detail_3?psc=1&pd_rd_i=B07J2WXZ76&pd_rd_w=Kly6G&pf_rd_p=8a8f3917-7900-4ce8-ad90-adf0d53c0985&pd_rd_wg=ZdwWv&pf_rd_r=TW4X6Z9K9C9T5CMEM2F3&pd_rd_r=d3ebd490-82ff-11e9-97ac-510cb5876d74. (Year: 2019).
Patent History
Patent number: D864042
Type: Grant
Filed: Nov 21, 2017
Date of Patent: Oct 22, 2019
Inventor: Youwei Shang (Jiangsu)
Primary Examiner: Cynthia Ramirez
Assistant Examiner: Michael A Maharajh
Application Number: 29/626,834
Type: Grant
Filed: Nov 21, 2017
Date of Patent: Oct 22, 2019
Inventor: Youwei Shang (Jiangsu)
Primary Examiner: Cynthia Ramirez
Assistant Examiner: Michael A Maharajh
Application Number: 29/626,834
Classifications
Current U.S. Class:
Perambulator, Invalid Chair, Or Stretcher (D12/128)