274 A.2d 113 BILLINGSLEY v. KELLY ET AL. [No. 317, September Term, 1970.]Court of Appeals of Maryland. Decided March 2, 1971. EVIDENCE — Promissory Note Introduced By Defendant To Show Underlying Nature Of Plaintiff’s Claim Could Later Be Used By Defendant To Prove Recoupment. Where plaintiff sued on corporate note endorsed by defendant, and defendant […]