Richard Chang

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Fang Yuan City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Main shaft structure of tool machine
- Patent number 9,132,521
- Issue date Sep 15, 2015
- KINGSAND MACHINERY LTD.
- Richard Chang
- B24 - GRINDING POLISHING
Information Patent Grant
Abrasive apparatus of a sander
- Patent number 8,287,335
- Issue date Oct 16, 2012
- Kingsand Machinery Ltd.
- Richard Chang
- B24 - GRINDING POLISHING
Information Patent Grant
Chisel quickly adjusting and positioning device for a chiselling ma...
- Patent number 7,243,692
- Issue date Jul 17, 2007
- Kingsand Machinery Ltd.
- Richard Chang
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
Information Patent Grant
Quickly detachable protective cover unit of a table sawing machine
- Patent number 7,210,386
- Issue date May 1, 2007
- Kingsand Machinery Ltd.
- Richard Chang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Manual clutch device for a roller sander for controlling reciprocat...
- Patent number 7,090,569
- Issue date Aug 15, 2006
- Kingsand Machinery Ltd.
- Richard Chang
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
CHISEL QUICKLY ADJUSTING AND POSITIONING DEVICE FOR A CHISELLING MA...
- Publication number 20070113926
- Publication date May 24, 2007
- Kingsand Machinery Ltd.
- Richard Chang
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
Information Patent Application
QUICKLY DETACHABLE PROTECTIVE COVER UNIT OF A TABLE SAWING MACHINE
- Publication number 20070095185
- Publication date May 3, 2007
- Kingsand Machinery Ltd.
- Richard Chang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Quick adjusting device for a lower guide base of a band saw
- Publication number 20060169119
- Publication date Aug 3, 2006
- Kingsand Machinery Ltd.
- Richard Chang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR