who invented sporks?

I guess you didn't wiki it found it in one.

A spork is a hybrid form of cutlery taking the form of a spoon-like shallow scoop with the addition of the tines of a fork (usually three or four). Spork-like utensils have been manufactured since at least the late 1800s; patents for spork-like designs date back to at least 1874 and the word "spork" was registered as a trademark both in the U.S. and the UK decades later. Sporks are offered in both re-usable and disposable form and are quite versatile. They are commonly used by fast food restaurants, prisons, school cafeterias, and backpackers.

A spork is a hybrid form of cutlery taking the form of a spoon-like shallow scoop with the addition of the tines of a fork (usually three or four). Spork-like utensils have been manufactured since at least the late 1800s; patents for spork-like designs date back to at least 1874 and the word "spork" was registered as a trademark both in the U.S. and the UK decades later. Sporks are offered in both re-usable and disposable form and are quite versatile. They are commonly used by fast food restaurants, prisons, school cafeterias, and backpackers.

The word spork is a portmanteau combining the words spoon and fork. The word "spork" appeared in the 1909 supplement to the Century Dictionary, where it was described as a trade name and "a 'portmanteau-word' applied to a long, slender spoon having at the end of the bowl projections resembling the tines of a fork". Sporks are occasionally known as foons.[citation needed] A similar term exists in Finnish: a "luha" (properly "lusikka-haarrukka") is a portmanteau word combining the words for "spoon" and "fork" respectively, and is most commonly to issued to conscrips on national service.

also the armed forces use them can you see them using a full dining set while on deployment?

General MacArthur and the US Army

After taking Japan they mandated that chopsticks were not to be used and forks and spoons should be used. But fearing an uprising with forks as a weapon, the spork was created.