Rule 3118. Demand for address of party or of person who possessed an
assigned cause of action or defense. A party may serve on any party a
written notice demanding a verified statement setting forth the post
office address and residence of the party, of any specified officer or
member of the party and of any person who possessed a cause of action or
defense asserted in the action which has been assigned. The demand shall
be complied with within ten days of its service.