Which came first, Coca-Cola or the lightbulb?

the lightbulb came first, by 7 years. Edison's carbon filament lamp burned for over 13 hours.

Side by side

Coca-Cola

Coca-Cola went on sale in May 1886 as a patent medicine, selling about nine glasses a day in its first year. Pemberton sold the rights for a few thousand dollars and died in 1888 without seeing any of it. Pepsi followed in 1893 under the name Brad's Drink, renamed Pepsi-Cola in 1898 — so Coke is seven years older, and both are older than the Ford Motor Company.

the lightbulb

Edison did not invent the electric light. Humphry Davy demonstrated an arc lamp in 1802, and at least twenty inventors produced incandescent bulbs before him; Joseph Swan demonstrated one in Newcastle in 1878 and was granted a British patent, which is why Edison eventually had to merge with him as Ediswan. What Edison produced in October 1879 was a bulb that lasted long enough and cost little enough to sell, together with the generating and wiring system to make it useful.