Patents by Inventor Ian Doherty

Ian Doherty 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).

  • Interface unit for vacuum sewers
    Patent number: 4285359
    Abstract: An interface unit connects an accumulation enclosure for a gravity feed conduit to a vacuum sewage conduit. The unit has an enclosure extension extending upwardly and having a top end near ground level. A vacuum conduit extension extends downwardly within the enclosure extension and has a bottom end near the accumulation enclosure.
    Type: Grant
    Filed: August 1, 1979
    Date of Patent: August 25, 1981
    Assignee: Aktiebolaget Electrolux
    Inventor: Ian Doherty