Patents by Inventor David A. Beisswanger

David A. Beisswanger 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).

  • Emergency lighting device
    Patent number: 4972300
    Abstract: An improved emergency chemiluminescent lighting device comprising a chemiluminescent light source, a storage container and a flexible member connecting the light source and container is disclosed herein.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: November 20, 1990
    Assignee: American Cyanamid Company
    Inventors: David A. Beisswanger, Bruce H. Baretz, Edward T. Rockwell, Jr., Edward T. Rockwell, Sr.
  • Indexing system for file folders
    Patent number: 4585253
    Abstract: An indexing system for file folders of the type having a tab along one edge includes a pattern of variable length fields formed on the tab. Each field carries indicia of a size proportionate to the field length. The indicia are visible along the edge of a folder placed in storage. When a series of folders are juxtaposed the indicia combine to form a visual pattern which directs a user's eye to the proper location for removing or replacing a particular folder. The indicia comprise color-coded bars which readily create the visual pattern.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: April 29, 1986
    Assignee: The Shaw-Walker Company
    Inventor: David A. Beisswanger