Safety device for quickly releasing control ropes of roman shades
A Standard patent application filed on 06 July 2009 credited to Huang, Chien Chih
;
Nien, Wu Chung
;
Liang, Wen Ying
;
Hsu, Sheng Ying
Details
Application number :
2009202722
Application type :
Standard
Application status :
FILED
Under opposition :
No
Proceeding type :
Invention title :
Safety device for quickly releasing control ropes of roman shades