Life Expectancy Timepiece Patent no. 5,031,161 Issued: July 9, 1991 Inventors: David Kendrick, Berkshire, NY

Do not ask for whom the bell tolls - ask your watch!

How much time do you have left? Should you start any long novels? You determine your life expectancy by referring to a combination of health factor and actuarial tables, and set it into the watch. From then on, this useful timepiece will keep track of your declining time on earth. The example shown indicates that the user has 37 years, 110 days, 21 hours, 4 minutes and 42 seconds left. 

Now, what happens when it chimes?

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