Patents by Inventor Edward C. Walker

Edward C. Walker 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).

  • Display lamp having a translucent envelope
    Patent number: 4170035
    Abstract: A display lamp which includes a container and a source of light and heat mounted adjacent to the container, and, within the container, a liquid in which are suspended a number of insoluble reflecting flakes, the container being substantially surrounded by an envelope at least part of which is translucent.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: October 2, 1979
    Assignee: Crestworth Limited
    Inventor: Edward C. Walker