It's been more than 30 years since Geoff Stelling picked his banjo for the folks in the U.S. Patent and Trademark Office. Frustrated by a pair of patent rejections, Stelling had traveled to Washington ...

AFTON Standing silently with a banjo in each hand, staring at a jaded U.S. patent examiner, Geoff Stelling knew he had something good. He had been to Washington and been rejected twice before. But ...