Patents by Inventor Carl F. Gruber

Carl F. Gruber 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).

  • Glow element arrangement for electric cigarette lighters
    Patent number: 4058701
    Abstract: A glow element arrangement for electric cigarette lighters includes a disk-shaped semiconductor element of predetermined geometric configuration. The element has electrically conductive contacting surfaces for the supply of electrical current. Various arrangements are disclosed for protecting the semiconductor element, for supplying current to the contacting surfaces and for preventing stress from being applied to the semiconductor element.
    Type: Grant
    Filed: December 21, 1976
    Date of Patent: November 15, 1977
    Assignee: Schoeller & Co. Elektrotechnische Fabrik GmbH & Co.
    Inventors: Carl F. Gruber, Georg Siebel