Patents by Inventor Derick Royston Clarke

Derick Royston Clarke 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).

  • Battery-powered portable vacuum
    Patent number: 7509706
    Abstract: A vacuum cleaner comprises an elongated vacuum body, a battery-pack attached to the elongated vacuum body and shoulder straps attached directly to the elongated vacuum body and/or the battery-pack. The battery-pack is engaged with an exterior side face of the elongated vacuum body and is generally positioned between said shoulder straps such that the battery-pack engages a back of a person having each arm extending through a respective one of said shoulder straps.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: March 31, 2009
    Inventor: Derick Royston Clarke