CH

Cheng-Hui Hsu

PI Pro-Techtor International: 1 patents #3 of 5Top 60%
Overall (All Time): #68,521 of 4,157,543Top 2%
44
Patents All Time

Issued Patents All Time

Showing 1–25 of 44 patents

Patent #TitleCo-InventorsDate
6807747 Structure tape rule housing 2004-10-26
6804898 Tape rule marking implement 2004-10-19
6766588 Drive-type tape rule 2004-07-27
6760979 Stop block device of measuring tape 2004-07-13
D491082 Measure tape 2004-06-08
6742260 Structure art design knife 2004-06-01
D490005 Tape measure 2004-05-18
6729028 Structure of cutter knife 2004-05-04
6694643 Shoelace adjustment mechanism 2004-02-24
D486407 Measure tape 2004-02-10
6631802 Tool box drill bit retainer 2003-10-14
D478292 Measure tape 2003-08-12
D476585 Measure tape 2003-07-01
D476214 Utility knife 2003-06-24
D473778 Utility knife 2003-04-29
6550155 Tape rule with automatic blade extension mechanism 2003-04-22
6536698 Dual mode tape rule blade arrestor structure 2003-03-25
D471119 Measure tape 2003-03-04
6477785 Measuring tape having a quick and effort-saving retracting device 2002-11-12
D465426 Measure tape 2002-11-12
6464160 Tape measure having quick rewinding mechanism 2002-10-15
6405451 Lock mechanism of tape measure 2002-06-18
D458550 Measuring tape 2002-06-11
D457449 Measuring tape 2002-05-21
6374496 Structure art design knife 2002-04-23