Inventor
FANN YAW-SHIN
TW14 patents
Patents
14 patentsUS5067758ANov 26, 1991
Lock handle assembly with limited angular movement
TONG LUNG METAL IND CO LTD82 citations96
US5551264ASep 3, 1996
Door lock having a deadbolt assembly with a low-cost corrosion-resistant bolt member
TONG LUNG METAL IND CO LTD33 citations92
US5551736ASep 3, 1996
Dual backset deadbolt assembly for a cylinder lock
TONG LUNG METAL IND CO LTD28 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
US5301526AApr 12, 1994
Lock set with improved spindle mechanism
TONG LUNG METAL IND CO LTD48 citations92
US5222383AJun 29, 1993
Cylinder lock
TONG LUNG METAL IND CO LTD41 citations92
US5103661AApr 14, 1992
Mechanical code lock
TONG LUNG METAL IND CO LTD24 citations92
US5083823AJan 28, 1992
Latch bolt operating device with lever handles and improved privacy lock mechanism
TONG LUNG METAL IND CO LTD31 citations92
US5074605ADec 24, 1991
Duplex latch-bolt mechanism
TONG LUNG METAL IND CO LTD27 citations92
US4768817ASep 6, 1988
Dead bolt assembly
TONG LUNG METAL IND CO LTD32 citations92
US4711477ADec 8, 1987
Duplex latch bolt mechanism
TONG LUNG METAL IND CO LTD48 citations92
US5431034AJul 11, 1995
Cylinder lock with removable and replaceable key plug
TONG LUNG METAL IND CO LTD83 citations91
US4760722AAug 2, 1988
Cylinder lock
TONG LUNG METAL IND CO LTD18 citations73