Patents by Inventor Dwight Clark Newman

Dwight Clark Newman 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).

  • Seed planting roller device
    Patent number: 4023511
    Abstract: An improved seed planting roller for planting seeds in individual holes in the ground, and having means for reclosing the hole over the planted seed. Also, means are shown for altering the circumference of the roller for adjustment of planted seed spacing.
    Type: Grant
    Filed: November 10, 1975
    Date of Patent: May 17, 1977
    Inventor: Dwight Clark Newman