When a counterclaim raises questions affecting the interests of third parties, the defendant may, and if required by the court shall, cause the third parties to be summoned in as parties to the action.
Conn. Gen. Stat. ยง 52-110
(1949 Rev., S. 7832; P.A. 82-160, S. 45.)
Defendant cannot cite in parties whose legal relation is only to himself, by raising issues which do not affect the judgment to be rendered. 50 Conn. 583. Cited. 68 Conn. 157. Cited. 25 CA 251; 41 Conn.App. 754.