Patents by Inventor Craig D. Kerndhan

Craig D. Kerndhan 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 sowing apparatus
    Patent number: 5269237
    Abstract: Apparatus for laying seeds includes a towable frame from which one or more blades are supported for cutting a slot in the ground surface below, a seed and fertiliser chute feeds seed into the cut ground surface via a channel formed between the frame and blade(s) and tines which make a horizontal branch cut from the slot. A scraper device continually cleans the blade(s).
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: December 14, 1993
    Assignee: Massey University
    Inventors: Christopher J. Baker, Craig D. Kerndhan, David J. Robinson