Here's a list of 13 Patent-Holding Celebrity Inventors. One that they might have included was the great ventriloquist, Paul Winchell. He not only held the patent on an artificial heart he invented but dozens of other patents, as well. He invented an early model disposable razor, a flameless cigarette lighter, a retractable fountain pen and many others. I never saw any proof of it but Paul used to claim he invented — and I think he said he patented — the idea of hanging a tennis ball in your garage so that when you drive in and your windshield comes into contact with it, you know when to stop your car. Clever man.