Patents by Inventor Daniel Grollmund

Daniel Grollmund 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).

  • Adapter for Holding a Hole Saw on a Power Tool
    Publication number: 20140017023
    Abstract: An adapter for holding a hole saw on a power tool includes a driver, a threaded spindle, and a connecting bushing, via which the threaded spindle and the driver are coupled in a direction of rotation.
    Type: Application
    Filed: July 12, 2013
    Publication date: January 16, 2014
    Inventors: Daniel Grollmund, Martin Richter