Patents Assigned to En Treprise Merville Pierre
  • Self-propelled machine for the concreting of ditches
    Patent number: 5080532
    Abstract: A self-propelled machine for concreting a ditch includes a caterpillar band which contacts and rolls on the bottom of the ditch, a propulsion unit for driving the displacement belt, and a spreading system for spreading concrete on the bottom and sides of the ditch.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: January 14, 1992
    Assignee: En Treprise Merville Pierre
    Inventors: Pierre Merville, Jacques Merville