Inventor
MA DONG KWAN
KR5 patents
⚠️ This page may combine multiple inventors who share the name “MA DONG KWAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SAMHONGSA CO LTD
4 patentsUS6474619B1Nov 5, 2002
Tube guide for a column unit
SAMHONGSA CO LTD32 citations89
US6371421B1Apr 16, 2002
Device for controlling the height of a swivel chair
SAMHONGSA CO LTD32 citations89
US6533084B2Mar 18, 2003
Gas spring device
SAMHONGSA CO LTD6 citations59
US6439662B2Aug 27, 2002
Spindle for a height regulating device
SAMHONGSA CO LTD4 citations59