Patents by Inventor H. Hedley Hall

H. Hedley Hall 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: 4208828
    Abstract: A roach trap that uses the physiology of the insect to entice the insect to a location where it is destroyed, the trap including a closed box with bait therein having a fanlight entrance at one end accessible by an inclined ramp, an enclosed tubular passage inside the box extending inwardly from the entrance so roaches can enter, said passage having a horizontal floor and tapering in size toward an open end whereby the roaches fall upon a sticky gummed paper where they die, including a close fitting access door at the opposite end of the box for removing and replacing the gummed paper, wherein the roof of the passage way extends beyond the floor whereby the roaches are enticed to move over the open end by feeling the roof with their antennae.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: June 24, 1980
    Inventors: H. Hedley Hall, George Spector