Patents by Inventor John W. MacBain

John W. MacBain has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rock reinforcement
    Patent number: 4537535
    Abstract: Rock reinforcement wherein a tubular member e.g. of steel is expanded by means of a non-explosive demolition agent into frictional contact with the wall of a hole formed in a rock face.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: August 27, 1985
    Inventor: John W. MacBain