申論題

申論題

一、Before 1873, bicycles did not have chains and the pedals were attached directly to the front wheel. The first bicycle with a chain was invented by H. J. Lawson. His bicycle was driven by a chain connected to the back wheel. This chain-driven bicycle was called the “safety bicycle” at that time. Please draft the abstract of the “safety bicycle” patent application in English.（20 分）