American Inventor revealed its Top 3 second-season finalists during last night's broadcast of the ABC reality competition series.

American Inventor 2's penultimate two-hour episode began with the Top 6 finalists each using the $50,000 they received as the show's regional audition winners to further develop their inventions over the course of four weeks with the aid of professional designers.

The Top 6 finalists were Los Angeles finalist Ricky DeRennaux and his "HT Racers" toy product; San Francisco finalist Greg Chavez and his "Guardian Angel" automatic Christmas tree fire extinguisher kit; Chicago finalist Elaine Cato and her "6-in-1 Convertible Brassiere"; Tampa finalists Joe and Mike Miller and their "Wrap Away" plastic-wrap dispenser; Houston finalists George and Denise Tucker and their "EZT4U" tea brewer; and New York finalists Craig Forrest and David Moeller and their "The Claw" bike rack.

The Top 6 finalists then unveiled their prototypes to American Inventor 2's judges -- British tycoon Peter Jones; former The Rebel Billionaire runner-up and Spanx pantyhose inventor Sarah Blakely; former boxer and grill master George Foreman; and former talk-show host and entrepreneur Pat Croce.  The judges narrowed the field of finalists from six to three based on the criteria of innovation, mass appeal, marketability and passionate pitch.

DeRennaux, Cato and Chavez were revealed to be American Inventor 2's Top 3 finalists at the conclusion of the episode.

"So far this is one of the greatest things I've ever done,"  said Chavez when it was revealed he was a member of the Top 3.   "At the end of my life I can look back and say, 'I accomplished something good in this world.'  That's a great legacy to leave... It really is."

Home viewers were able to cast their votes immediately following the broadcast, with American Inventor 2's $1 million winner being revealed during the show's finale on Wednesday, August 1 at 8PM ET.