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 26–44 of 44 patents

Patent #TitleCo-InventorsDate
6357133 Flexible rule rewinding device 2002-03-19
D454042 Utility knife 2002-03-05
D447712 Tape measure 2001-09-11
D441671 Tape measure 2001-05-08
D436321 Measuring tape 2001-01-16
6159292 Tape ruler coating nylon resin forming structure 2000-12-12
D433344 Measure tape 2000-11-07
6131844 Tape rule blade arrestor device 2000-10-17
D421231 Measure tape 2000-02-29
D420606 Measure tape 2000-02-15
D419850 Utility knife 2000-02-01
D418435 Measure tape 2000-01-04
D415971 Measure tape 1999-11-02
D415047 Measure tape 1999-10-12
5897708 Apparatus for forming a two-sided fiberglass tape measure with two differently colored nylon resin coatings 1999-04-27
5895539 Method of making a two-sided fiberglass tape measure with two differently colored nylon resin coating 1999-04-20
D402525 Tool kit 1998-12-15
D379771 Measure tape 1997-06-10
5531395 Stopping device for tape measures 1996-07-02