Patents by Inventor Harold Fredrick DeHart

Harold Fredrick DeHart 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: 4117953
    Abstract: Various types of seeds are planted in a coordinate array in flats or in peat cups by means of a hand-manipulated seed pick-up head having limited paths of rectilinear and vertical movement. The pick-up head holds the seeds on a frontal face thereof in the operator's view and transfers them to a plurality of individually adjustable tubes which serve to guide the seeds upon release of the vacuum into the peat cups by gravity feed. An instantaneous puff of air may be applied to aid in expelling the seeds into the tubes.
    Type: Grant
    Filed: September 15, 1976
    Date of Patent: October 3, 1978
    Inventor: Harold Fredrick DeHart