Patents by Inventor Lawrence H. Howroyd

Lawrence H. Howroyd 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).

  • Building construction
    Patent number: 4464868
    Abstract: A building comprising a main structure with its own walls and roof, a secondary roof structure located with respect to at least portion of one wall of the structure so that it can be moved between a position in which it extends outwardly to form the roof of a verandah, porch, carport or the like and a more or less vertical position in which it substantially covers said portion of the wall the mounting of the secondary roof structure being such that it is biased to the outwardly extending position.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: August 14, 1984
    Inventor: Lawrence H. Howroyd