Patents Represented by Attorney John J. Chrystal

Find this attorney in the Justia Lawyer Directory

  • Biodegradable concrete form release agent
    Patent number: 5194584
    Abstract: A small amount of tall oil uniformly dispersed in a vegetable oil is a superior concrete from release coating composition.
    Type: Grant
    Filed: February 11, 1992
    Date of Patent: March 16, 1993
    Assignee: Leahy-Wolf Co.
    Inventor: Kenneth C. Leahy
  • Pin ball bumper post
    Patent number: D253000
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: September 25, 1979
    Inventor: George A. Hanson