United States
4
2013-02-21
Young Chu from , US has applied for patents for these inventions. The list has both pending applications and granted patents:
Crash pad with pelletized and shredded form filling
#2 | 2011-05-19Belay device with a sliding slack bar
#3 | 2011-05-19Easy clip carabiner with a retractable trigger
#4 | 2011-01-20Belaying apparatus with friction claw for climbing
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