Patents by Inventor James D. Langseth

James D. Langseth 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).

  • Pyrotechnic signal with collapsible handle
    Patent number: 3954059
    Abstract: A pyrotechnic signal such as a flare, smoke signal, or the like, which is provided with a hollow plastic handle into which the pyrotechnic mass is telescopingly received. For storage, the pyrotechnic mass is positioned within the handle and for use the pyrotechnic mass is partially withdrawn from the handle. The handle may be rendered water-tight so that the signal can be used in marine environments and will float on water.
    Type: Grant
    Filed: August 30, 1974
    Date of Patent: May 4, 1976
    Assignee: Olin Corporation
    Inventor: James D. Langseth