Inventor
YANG JU LIN
TW9 patents
⚠️ This page may combine multiple inventors who share the name “YANG JU LIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TONG LUNG METAL IND CO LTD
6 patentsUS7874191B2Jan 25, 2011
Cylinder lock
TONG LUNG METAL IND CO LTD21 citations92
USD506665SJun 28, 2005
Doorknob
TONG LUNG METAL IND CO LTD18 citations91
US8960740B2Feb 24, 2015
Lock shell assembly
TONG LUNG METAL IND CO LTD16 citations83
US7975518B2Jul 12, 2011
Re-keyable lock with improvements for preventing incomplete re-keying
TONG LUNG METAL IND CO LTD11 citations83
USD1084819SJul 22, 2025
Electronic lock
TONG LUNG METAL IND CO LTD2 citations71
USD1084825SJul 22, 2025
Electronic lock
TONG LUNG METAL IND CO LTD0 citations59