Article: Inventor's disappearing act is getting noticed; When this St. Paul entrepreneur's bubble bursts, it leaves no trace but creates plenty of excitement.(NEWS)

Byline: Curt Brown; Staff Writer

For more than a decade, Tim Kehoe has toiled to make the perfect colored bubble - one that wouldn't leave any residue on the wall when it bursts.

"I was always ruining things, starting fires and explosions and having to evacuate the kids," the St. Paul toymaker said Tuesday.

Mixing JELL-O and food coloring with soap bubbles in his bathtub, Kehoe kept tinkering. "Before I met my patient wife, I would never get my damage deposits back from rental apartments because I was leaving stains all over the place, much to my roommates' chagrin," he said.

Now, Kehoe is drawing national attention for devising a ...

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