The Jan 5, 2010 episode of NCIS (titled "Ignition") introduces a lawyer character named M. Allison Hart (played by Rena Sofer) who (in the storyline) did pro bono patent application drafting in the area of jet packs.
Since then, the M. Allison Hart character has appeared twice more, tho not as a patent lawyer.
HOWEVER, if one goes to frame 10 of Life magazines 30 Dumb Inventions, one will find a photo of inventor Harold Graham demonstrating a jet pack to President Kennedy in the year 1961.
One hundred years earlier, Spencer demonstrated the Spencer rifle to President Lincoln. Although legend has it that the rifle didn't work properly in front of Lincoln, Spencer did get government contracts and the Spencer rifle was used by Union troops under the command of George Armstrong Custer at Gettysburg on July 3, 1863.