Mich. Comp. Laws § 449.6: Partnership; definition; effect of act as to prior and limited partnerships.

Sec. 6.

(Partnership defined).

A partnership is an association of 2 or more persons, which may consist of husband and wife, to carry on as co-owners a business for profit; any partnership heretofore established consisting of husband and wife only, formed since January 10, 1942 shall constitute a valid partnership.

But any association formed under any other statute of this state, or any statute adopted by authority, other than the authority of this state, is not a partnership under this act, unless such association would have been a partnership in this state prior to the adoption of this act; but this act shall apply to limited partnerships except in so far as the statutes relating to such partnerships are inconsistent herewith.