Inventor

CHUNG JEN-CHIH

TW2 patents

Patents

2 patents

US9239213B2Jan 19, 2016

Sights and methods of operation thereof

SINTAI OPTICAL SHENZHEN CO LTD12 citations80

US8919647B2Dec 30, 2014

Sights and methods of operation thereof

SINTAI OPTICAL SHENZHEN CO LTD5 citations80