Patents by Inventor David Senger

David Senger 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).

  • Thin ice inflatable rescue ladder
    Patent number: 6190222
    Abstract: A rescue ramp is provided having a dual lobed, hinged inflatable ramp having two pairs of spaced inflatable tubes and a flexible floor mounted between each and connecting the tubes. A rope ladder is mounted to the floors of the lobes.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: February 20, 2001
    Inventor: David Senger