Inventor

WANG CHANG-FENG

CN2 patents

⚠️ This page may combine multiple inventors who share the name “WANG CHANG-FENG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ASIA OPTICAL CO INC

1 patent

US7102300B2Sep 5, 2006

Ballast device with built-in power supply and operation thereof

ASIA OPTICAL CO INC5 citations48

SINTAI OPTICAL SHENZHEN CO LTD

1 patent

US8950677B2Feb 10, 2015

Barcode reading method and barcode reading device

SINTAI OPTICAL SHENZHEN CO LTD0 citations38