Patents by Inventor John Walter Cook

John Walter Cook 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).

  • Toilet waste holding apparatus
    Patent number: 4042981
    Abstract: A toilet waste holding apparatus for a vehicle has a vent which sucks away tank gasses and odors, without permitting sewage overflow to enter the vent. An insert allows entrance of clean air to the tank and access to the interior for cleaning.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: August 23, 1977
    Assignee: North American Philips Corporation
    Inventor: John Walter Cook