Patents by Inventor David W. Blanchard

David W. Blanchard 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).

  • Fastener for plastic grocery sacks and dispenser therefor
    Patent number: 4738076
    Abstract: A disk-shaped fastener for engaging the neck of a plastic grocery sack firmly and dependably to hold the sack in a closed condition, and which may easily be applied to the neck of the sack and easily removed therefrom; and a simple applicator for the fastener for use at the check-out stand of a supermarket for quickly and conveniently sliding the fastener over the handle portion of the plastic grocery sack into its fastening position.
    Type: Grant
    Filed: March 13, 1988
    Date of Patent: April 19, 1988
    Inventor: David W. Blanchard