Ind. Code § 25-28.5-1-20
(b) In addition, every nonresident applicant to be licensed as a plumbing contractor or journeyman plumber shall file an irrevocable appointment of the secretary of the commission as his agent for service of process within this state.
(2) Service of process upon the secretary, as provided in this section shall be equivalent to personal service within the state upon the nonresident licensee or registrant.
Formerly: Acts 1972, P.L.188, SEC.1. As amended by Acts 1981, P.L.222, SEC.213.