Patents by Inventor Steven G. Marshall

Steven G. Marshall 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).

  • Patent number: 4698620
    Abstract: The present invention involves a multiple protection security device which is used to prevent and/or detect burglary of articles, particularly of consumer goods and the like. In one embodiment, the present invention is a remote signal-actuating device for attachment to articles which includes a fluid-containing member which releases detection fluid in response to a predetermined force. In a second embodiment, an electronic security device includes such a fluid-containing member, and, in a third embodiment, a security device for physically restraining an article includes such a fluid-containing member. The detection fluid may be a gas, a liquid or a mixture of these and it may be a coloring agent, an odor containing fluid, a flourescent or phosphorescent dye, a radioactive material or the like.
    Type: Grant
    Filed: October 31, 1985
    Date of Patent: October 6, 1987
    Inventor: Steven G. Marshall
  • Patent number: D288524
    Type: Grant
    Filed: June 28, 1984
    Date of Patent: March 3, 1987
    Inventor: Steven G. Marshall
  • Patent number: D295721
    Type: Grant
    Filed: March 19, 1986
    Date of Patent: May 17, 1988
    Inventor: Steven G. Marshall