There is no US patent 555408021. There is also no US patent 55408021.
Abraham Lincoln is the only US president with a patent.
US patent 4 was awarded to Thomas Blanchard in 1836, for a machine to round the ends of tackle blocks.
President Lincoln.
Abraham Lincoln is the only US President to hold a patent.
Toni rudisill
The President of the United States holds the highest office in the US government
Charles A. Walton.
Lincoln was granted a patent for a device to lift boats over shoals.
a person who holds a patent lamp
Barack Obama.
Martin Van Buren holds that distinction.