§ 4-502
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/md/public-utilities/4-502A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
§4–502.
In an action by a public service company to collect a charge, the public service company may not recover any amount if, in the transaction that is the subject of the action, the public service company demanded a rate greater than that lawful under this division when the charge was made.