Architecture was for him a useful art and a service.

Exclusive rights to the "useful art" described in a book was only available by patent.

I can't imagine how it's considered "useful arts," by its definition, either.

I have devoted myself to industry; I study the useful arts.

In all the useful arts the world is either standing still or going backwards.

They thought that this would be a useful art to incorporate into a starship's repertoire.

We hear something too much of the results of machinery, commerce, and the useful arts.

Before the 20th century, the term was uncommon in English, and usually referred to the description or study of the useful arts.

I put the useful arts first, second and third.

This seems to be a moment when the useful arts have an especially compelling economic rationale.