Patents by Inventor Daryl L. Culler

Daryl L. Culler 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).

  • Film developing tube
    Patent number: 4598988
    Abstract: A film developing tube for developing roll film is provided. The preferred embodiment is a tubular developing tank with a light trap incorporated at one end which allows the reagents to be easily and efficiently cycled over the film with no requirement of total darkness once the film has been loaded into the tube.
    Type: Grant
    Filed: September 24, 1984
    Date of Patent: July 8, 1986
    Inventors: Dean R. Hodge, Daryl L. Culler