Inventor
HSU KAI-SHENG
US2 patents
Patents
2 patentsUS8267144B2Sep 18, 2012
Roman shade window curtain having a special head rail for using a roller shade as its release/retraction control
HSU KAI-SHENG28 citations87
US8127821B2Mar 6, 2012
Roman shade window curtain having rolling spool for multi-step retracting/unfolding control
HSU KAI-SHENG21 citations87