What does EATO stand for?

Eastern Towhee - Common English name - Scientific name: Pipilo Erythrophthalmus - American Ornithologists Union four-character bird identification (IBP)

Eaton - NCIC construction equipment make code (NCIC)

Eaton Corp. - NCIC boat manufacturer code (NCIC)

Euro-Asia Trade Organization, Taipei, Taiwan (SAUO)