Patents by Inventor Martin Philip Castro

Martin Philip Castro 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).

  • Adjustable defense baton
    Publication number: 20080234053
    Abstract: The present invention relates to the use of an adjustable defense baton or arnis stick. Weights may be added or subtracted and located in various positions along the length and/or diameter of the baton.
    Type: Application
    Filed: March 19, 2007
    Publication date: September 25, 2008
    Inventor: Martin Philip Castro