Patents by Inventor John I. Bloomfield

John I. Bloomfield 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).

  • Tamperproof cap
    Patent number: D329809
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: September 29, 1992
    Assignee: Plastic Consulting and Design Limited
    Inventor: John I. Bloomfield