Any person, firm, partnership, or corporation is exempt from registration under the provisions of this chapter who meets all the following:
(a)
Is a nonresident of the State of California.
(b)
Is legally qualified in another state to practice as a civil, electrical, or mechanical engineer.
(c)
Does not maintain a regular place of business in this state.
(d)
Offers to but does not practice civil, electrical, or mechanical engineering in this state.