Patents by Inventor Maarten Franz Stam

Maarten Franz Stam 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).

  • Lifting apparatus
    Patent number: D509340
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: September 6, 2005
    Assignee: Stam Bouwmachines B.V.
    Inventor: Maarten Franz Stam