IP Library › Granted Patent US 1,076,638
Granted Patent S1
US 1,076,638 · App. 29/906,482 · Granted May 27, 2025

Knife sharpener

Inventor: Huazhu Liu (Shenzhen, CN)
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Quick Facts
Patent No.
US 1,076,638
App. No.
29/906,482
Granted
May 27, 2025
Kind
S1
Claims (1)

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

References Cited (7)
US D928581S · Hong · 2021 [cited by examiner]
US D1016108S · Hu · 2024 [cited by examiner]
US D1035411S · Li · 2024 [cited by examiner]
US D1058338S · Li · 2025 [cited by examiner]
US 20230294246A1 · Horl · 2023 [cited by examiner]
US 20230356348A1 · Horl · 2023 [cited by examiner]
US 20230405767A1 · Berger · 2023 [cited by examiner]