Inventor
HSU CHENG-YANG
TW4 patents
⚠️ This page may combine multiple inventors who share the name “HSU CHENG-YANG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
INST OF OCCUPATIONAL SAFETY & HEALTH COUNCIL OF LABOR AFFAIRS
2 patentsUS6155750ADec 5, 2000
Trench shield having wheels simultaneously provided for protection and rolling purposes
INST OF OCCUPATIONAL SAFETY & HEALTH COUNCIL OF LABOR AFFAIRS17 citations80
US6164875ADec 26, 2000
Trench shield directly ridable and movable on a constructing pipe
INST OF OCCUPATIONAL SAFETY & HEALTH COUNCIL OF LABOR AFFAIRS6 citations58