Patents Assigned to William P. Poythress & Company
  • Method for dilating the smooth muscles of the upper urinary tract
    Patent number: 4432977
    Abstract: Dilation of smooth muscles of the upper urinary tract with a di-N-substituted aminoethyl ester of diphenylthioacetic acid.
    Type: Grant
    Filed: August 27, 1982
    Date of Patent: February 21, 1984
    Assignee: William P. Poythress & Company
    Inventor: William M. Davis