Gyeonggi-do
South Korea
3
2009-12-03
Bok Kwon Wang from Gyeonggi-do, KR has applied for patents for these inventions. The list has both pending applications and granted patents:
Automatic revolving door having foldable rotary wings
#2 | 2009-05-14Power transmitting system for rotary wings of automatic revolving door
#3 | 2009-02-05Automatic system for folding wings of automatic revolving door
3869959 ⎘