Deaf Smith, this Carl Lewis a relative of yours?
Last I heard, John Browning still held the record for firearms patents. I'm at work and don't have access to my John Browning book.
With all respect, I doubt anyone will ever equal what John Moses Browning did. He was born (1855) when muzzleloaders were the norm and cartridges were nearly unheard of.
By the time he died in 1926, he had created the Models 1886, 1892, 1894 and 1895 Winchesters, the .25 Auto vest pistol, the .32 Auto and .380 pocket pistols, the 37mm antiaircraft gun, a variety of machine guns still in use today, lever action shotguns, semi-auto .22 rimfire rifles and the famous .45 Auto.
Shortly before he died in 1926, he designed the Browning Hi-Power 9mm pistol that was produced after his death.
To go from muzzleloaders to the machine gun is no small feat.
Not to fault Mr. Lewis, but he didn't have such technological canyons to leap. However, his work on the 40mm grenade launcher under the M16 was very valuable to this nation and its allies and remains so today.
Interesting that we have not heard of him. But then, were it not for a series of articles about John Garand in the American Rifleman of the 1930s through recent times, he would have been forgotten as well.
Where might I find more information on Mr. Lewis?