who is ralph stolle
Ralph J. Stolle, 91, an Inventor Who Made Pop Tops Practical. Ralph J. Stolle, a prolific inventor and businessman, died on Jan. 13 at his farm near Lebanon, Ohio. He was 91 and had cancer, said Nelson Schwab Jr., his lawyer. Mr. Stolle, who held more than 50 patents, developed machinery that made mass production of pop-top beverage cans economical and practical.