IP Library › Granted Patent US 1,058,337
Granted Patent S1
US 1,058,337 · App. 29/856,622 · Granted Jan 21, 2025

Knife sharpener

Inventor: En Yang (Yongkang, CN)
Assignee: Yongkang Ruixin Industry and Trade Co., Ltd
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Quick Facts
Patent No.
US 1,058,337
App. No.
29/856,622
Granted
Jan 21, 2025
Kind
S1
Claims (1)

The ornamental design for a knife sharpener, as shown and described.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 14, 2022
From: YANG, EN
To: YONGKANG RUIXIN INDUSTRY AND TRADE CO., LTD
Reel/Frame 061431/0714 →
Priority Claims (1)
CN 202230463996.5 · Jul 20, 2022 · national
References Cited (11)
US 1897662A · Walter · 1933 [cited by examiner]
US D151792S · Smith · 1948 [cited by examiner]
US 5185958A · Dale · 1993 [cited by examiner]
US 5195275A · McLean · 1993 [cited by examiner]
US 5431068A · Alsch · 1995 [cited by examiner]
US 6579163B1 · Ross · 2003 [cited by examiner]
US D591125S · Groten · 2009 [cited by examiner]
US 8323077B2 · Nakoff · 2012 [cited by examiner]
US D992392S · Wang · 2023 [cited by examiner]
CN 307252182 · 2022 [cited by examiner]
Amazon, Ruixin Pro RX-009 Professional Knife Sharpener with 10 Whetstones, 360°, Oct. 13, 2022, http://tinyurl.com/bdhptw6h (Year: 2022). [cited by examiner]