Md. Code, Commercial Law § 11–601

(a) In this subtitle the following words have the meanings indicated.

(b) “Container” means a liquefied petroleum gas container.

(c) “Liquefied petroleum gas” means any material which is composed predominately of any of the following hydrocarbons or mixtures of them:

(1) Propane;

(2) Propylene;

(3) Normal butane;

(4) Isobutane; or

(5) Butylenes.

(d) “Mark” includes any name, initial, or other device.

(e) “Marked container” means a container which bears on its surface in plainly legible characters the mark of its owner.

(f) “Owner” means:

(1) Any person who holds a written bill of sale under which title or ownership to a container was transferred to him; or

(2) Any manufacturer of a container who has not transferred ownership of the container under a written bill of sale.

(g) “Person” includes an individual, corporation, business trust, statutory trust, estate, trust, partnership, association, two or more persons having a joint or common interest, or any other legal or commercial entity.