TC

Tseng Hsien Chang

Overall (All Time): #583,675 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
7357089 Automatic thread cutting device for sewing machine 2008-04-15
7096808 Protection device for preventing broken needle of sewing machine 2006-08-29
7096807 Needle assembly for embroidery machine 2006-08-29
7040243 Body structure for sewing machine 2006-05-09
7011032 Control mechanism for driving upper looper of sewing machines 2006-03-14
6957616 Restoring device of tension adjusting device for sewing machines 2005-10-25
6892658 Sewing machine 2005-05-17
6843189 Sewing machine having a thread tension adjusting device 2005-01-18
6766752 Sewing machine having a thread hooking device 2004-07-27