In the winter of 1869, a young Thomas Edison made a significant career move. He resigned from his job at the Western Union office in Boston, Massachusetts, and declared his intent to focus on bringing his inventions to life. Eighteen days later, Edison filed his second patent application, an invention he named the "Stockbroker Printing Instrument." This invention was a black-and-gold ... https://www.tickerplay.com/blog/thomas-edison-and-the-birth-of-the-stock-ticker/