What does the Nabisco logo represent?

[Squink]

@Colophon

What I do remember is that back in the 1980s … (i.e. this version)

Nabisco filed for a US trademark on that (the antennaed oval with the word nabisco inside) on November 7, 1955.
The only earlier Nabisco trademark (september 1901) is for the word Nabisco in an outline font, no oval, no antenna.