Patents by Inventor David Powdermaker

David Powdermaker 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).

  • Portable multiple liner cuspidor
    Publication number: 20060101564
    Abstract: The present invention discloses a unique and novel portable cuspidor having a recepticle, with an upper chamber, adapted for holding a funnel and multiple stackable disposable liners, and a lower chamber for holding towelettes or for use as a storage compartment.
    Type: Application
    Filed: November 12, 2004
    Publication date: May 18, 2006
    Inventor: David Powdermaker