Patents by Inventor Horst Lettenmeyer

Horst Lettenmeyer 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).

  • Lamp structure
    Patent number: 4597035
    Abstract: A lamp structure and, more specially, a strip lighting fixture has an outer casing tube with a slot running between its ends and at least two double-ended lamps or bulbs placed within it and joined up electrically in series with a current supply, the bulbs being kept electrically in contact by one or more springs acting axially thereon.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: June 24, 1986
    Inventor: Horst Lettenmeyer