Patents by Inventor Duido J. J. Lenaerts

Duido J. J. Lenaerts 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).

  • Gas and/or vapor discharge lamp
    Patent number: 4144475
    Abstract: The invention relates to high pressure sodium vapor discharge lamp comprising a discharge tube and an outer bulb enveloping this tube, a glow starter being disposed in the space between that discharge tube and the outer bulb.In accordance with the invention the glow starter is resiliently clamped between the two rigid electric conductors which supply the discharge tube with current.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: March 13, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Robert R. M. Delen, Duido J. J. Lenaerts