Patents by Inventor Gerald Derby-Lewis

Gerald Derby-Lewis 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).

  • Moulding pallet
    Patent number: 4832309
    Abstract: A moulding pallet for moulding building blocks with interlocking surfaces comprises a metal sheet bent to form parallel ridges and valleys, with transverse sheet metal channels inserted through openings in the ridge sides forming transverse secondary ridges.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: May 23, 1989
    Inventor: Gerald Derby-Lewis