Patents by Inventor Darren Gilbertson

Darren Gilbertson 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).

  • VENTILATION DUCTING SYSTEMS & METHODS
    Publication number: 20160333692
    Abstract: In one preferred form of the present invention shown in FIG. 2, there is provided an airflow restriction device for mining ventilation. The airflow restriction device comprises a body having an inflatable portion.
    Type: Application
    Filed: January 12, 2015
    Publication date: November 17, 2016
    Inventor: Darren Gilbertson