Inventor
DON LAN-KUN
TW17 patents
⚠️ This page may combine multiple inventors who share the name “DON LAN-KUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TONG LUNG METAL IND CO LTD
14 patentsUS7748759B2Jul 6, 2010
Door lock having an unlocking mechanism for simultaneously unlatching latch-bolt and deadbolt mechanisms
TONG LUNG METAL IND CO LTD24 citations92
US7066507B2Jun 27, 2006
Post-removable construction of a door lock device
TONG LUNG METAL IND CO LTD40 citations92
US6929290B2Aug 16, 2005
Adjustable button mechanism for a lock
TONG LUNG METAL IND CO LTD21 citations92
US6575006B1Jun 10, 2003
Lock
TONG LUNG METAL IND CO LTD43 citations92
US5655393AAug 12, 1997
Door lock set with simultaneously retractable deadbolt and latch
TONG LUNG METAL IND CO LTD30 citations92
US5551264ASep 3, 1996
Door lock having a deadbolt assembly with a low-cost corrosion-resistant bolt member
TONG LUNG METAL IND CO LTD33 citations92
US5474346ADec 12, 1995
Face plate adapted to be inserted into a bore of a door
TONG LUNG METAL IND CO LTD22 citations92
US5385374AJan 31, 1995
Reinforced cylindrical door lock set
TONG LUNG METAL IND CO LTD24 citations92
US5722273AMar 3, 1998
Latch bolt operating device
TONG LUNG METAL IND CO LTD44 citations91
US5666833ASep 16, 1997
Reinforcing apparatus for a lever handle of a door lock
TONG LUNG METAL IND CO LTD53 citations90
US7581421B2Sep 1, 2009
Door lock assembly having a support structure to support a tailpiece and a retaining plate
TONG LUNG METAL IND CO LTD12 citations84
US6935148B2Aug 30, 2005
Lock engaging-and-disengaging mechanism
TONG LUNG METAL IND CO LTD18 citations84
US7073829B2Jul 11, 2006
Restoring structure of a lock
TONG LUNG METAL IND CO LTD15 citations83
US7748758B2Jul 6, 2010
Cylinder lock having improved torsional strength
TONG LUNG METAL IND CO LTD17 citations79