485 U.S. 478 108 S.Ct. 1340 99 L.Ed.2d 565 TULSA PROFESSIONAL COLLECTION SERVICES, INC., Appellantv.JoAnne POPE, Executrix of the Estate of H. Everett Pope, Jr., Deceased. No. 86-1961. Argued March 2, 1988. Decided April 19, 1988. Syllabus Under the nonclaim provision of Oklahoma’s Probate Code, creditors’ claims against an estate are generally barred unless they […]