The Hamilton Watch Company of Lancaster introduced the first electric watch, The Hamilton Electric 500, on this day in 1957.

Did you know that:

• Leonardo da Vinci unsuccessfully tested a flying machine on this day in 1496
• Oleomargarine was patented by Henry Bradley, Binghamton, on this day in 1871
• Steve Wozniak and Steve Jobs incorporated Apple Computer Co on this day in 1977