In 1474, the Venetian Senate issued a Statute on Industrial Brevets that is widely considered the first patent law. Patents had been issued before, often at the whims of monarchs, but this statute codified the practice and set out a standard 10-year term.
In 1932 – The Sydney Harbour Bridge was opened. It is the world’s largest (but not the longest) steel arch bridge with the top of the bridge standing 134 metres above the harbour.
In 1991 – U.S. patent No. 5,000,000 was issued for a process turning garbage into fuel to microbiologist Lonnie. O. Ingram of the University of Florida. His method depended on the creation of a new species of bacterium genetically formed from two other bacteria.