GB1988002223715
BENDABLE ELBOW CONNECTOR
GB8313067 & GB8402148
DISMOUNTABLE STRUCTURE

John Choong with Robert Magid
GB1988002223715
FILING SYSTEM

John Choong with Robert David Collischon & Martin Brook Riley.
       
GB1988002223715
PERSONAL WORKSTATION
John Choong with Desmond Reaney
GB2218142
TENSIONING MECHANISM
John Choong



  GB8511874
SPRING TILT MECHANISM
John Choong with Geoff Hollington