Md. Code Ann., Corps. & Ass'ns § 10-304
(a) Except as provided in subsection (b) of this section, a person who makes a contribution to a partnership and erroneously but in good faith believes that he has become a limited partner in the partnership is not a general partner in the partnership and is not bound by its obligations by reason of making the contribution, receiving distributions from the partnership, or exercising any rights of a limited partner, if, within 30 days after he knew or should have known of the mistake:
(b) A person who makes a contribution under the circumstances described in subsection (a) of this section is liable as a general partner to any third party who transacts business with the partnership prior to the occurrence of either of the events referred to in subsection (a) of this section:
Added by Acts 1981, c. 801, § 2. Amended by Acts 1988, c. 550.