Patents by Inventor Donna L. Collins

Donna L. Collins 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).

  • Sheet gripping and handling device
    Patent number: 4349225
    Abstract: Improvements in sheet gripping and handling devices; devices for gripping the vertical end edges of heavy, rigid sheet materials to facilitate and permit carrying thereof supported by the devices; handle devices engageable with the vertical end edges of heavy, rigid sheet material like sheet rock, enabling two men to comfortably and safely carry one or more sheets between them.
    Type: Grant
    Filed: August 26, 1980
    Date of Patent: September 14, 1982
    Inventors: Darryl L. Collins, Donna L. Collins, Merton C. Knapp, Evalyn L. Knapp