William Holden had a studio where he built artistic fountains like the ones shown here. Having a welder and metal working tools he could make functional contraptions. When he needed a paper towel holder in his kitchen that mounted on the side of his refrigerator, he came up with a mechanism to help tear sheets.  It worked so well he filed for the patents and went from hungry artist to starving inventor.

These days concepts are drawn with 3-D CAD modeling software. Professional prototypes are made and we typically license the patent rights for humble royalties.

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