Patents by Inventor Chris Cawte

Chris Cawte 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).

  • Manholes and inspection chambers
    Publication number: 20060239780
    Abstract: A manhole or inspection chamber, comprising at least one shaft section of first external diameter and a pot of smaller diameter adapted to be connected by a seal to the shaft member and to be connected to pre-existing pipes, whereby the seal permits relative vertical movement between the shaft section and pot.
    Type: Application
    Filed: February 18, 2004
    Publication date: October 26, 2006
    Inventor: Chris Cawte