Patents by Inventor William D. Oswald

William D. Oswald 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).

  • Patent number: 6672228
    Abstract: A device for planting different varieties of seeds is provided with a seed hopper or carousel that is selectively placed in open communication with a plurality of seed metering devices. A selectively positionable gate member directs the seeds to specific seed metering devices. The seed metering devices are movable on the device to engage a first metering device with a ground engagement assembly and a second metering device with a discharge container. The seed metering devices operate in alternating seed-dispersing and clearing modes simultaneously to speed planting. A GPS system may be incorporated to track and accurately control the planting operation.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: January 6, 2004
    Inventors: Ned C. Groelz, William D. Oswald