The first Bingo (style 1) was a leg-model bell-back alarm clock similar to the Big Ben. The style 2 Bingo was an inexpensive alarm clock, and was made until 1957. A plastic cased Bingo (style 3) was made from 1962 - 1979.
The trademark BINGO was granted to Western Clock co. on February 3, 1914, number 95,183. The registration contains the statement "The trade-mark has been continuously used in our business since August 1, 1913."