Koon For Chung

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Hong Kong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Hand-held knockout punch driver
- Patent number 11,701,789
- Issue date Jul 18, 2023
- Milwaukee Electric Tool Corporation
- James O. Myrhum
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Hand-held knockout punch driver
- Patent number 11,034,047
- Issue date Jun 15, 2021
- Milwaukee Electric Tool Corporation
- James O. Myrhum
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Hand-held knockout punch driver
- Patent number 10,252,438
- Issue date Apr 9, 2019
- Milwaukee Electric Tool Corporation
- James O. Myrhum
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Hand-held knockout punch driver
- Patent number 9,393,711
- Issue date Jul 19, 2016
- Milwaukee Electric Tool Corporation
- James O. Myrhum
- B26 - HAND CUTTING TOOLS CUTTING SEVERING

Patents Applicationslast 30 patents

Information Patent Application
HAND-HELD KNOCKOUT PUNCH DRIVER
- Publication number 20210299902
- Publication date Sep 30, 2021
- Milwaukee Electric Tool Corporation
- James O. Myrhum
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
HAND-HELD KNOCKOUT PUNCH DRIVER
- Publication number 20190224879
- Publication date Jul 25, 2019
- Milwaukee Electric Tool Corporation
- James O. Myrhum
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Application
HAND-HELD KNOCKOUT PUNCH DRIVER
- Publication number 20160303755
- Publication date Oct 20, 2016
- Milwaukee Electric Tool Corporation
- James O. Myrhum
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Application
HAND-HELD KNOCKOUT PUNCH DRIVER
- Publication number 20120255184
- Publication date Oct 11, 2012
- James O. Myrhum, JR.
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...