Mechanism of Smooth Stair Climbing for Hand Truck/Trolley
Click link below for the video of proof of concept prototype
MyIPO patent application Number: PI 2018703014 https://estatus.myipo.gov.my/estatus/web/index.php?r=estatus
PCT Application filed on 31 July 2019.
Patent specification gazette at PATENTSCOPE on 10/2020, 5 March 2020, with Application Number: MY2019/000032
Refer link below for the patent specification
or download the pdf version: