Patents by Inventor Alexander B. Robertson

Alexander B. Robertson 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).

  • Hand operated smoking device
    Patent number: 4172460
    Abstract: A smoking device is provided which is hand operated and does not require suction or mouth contact.
    Type: Grant
    Filed: July 29, 1977
    Date of Patent: October 30, 1979
    Assignee: Oat Willie's Department Store, Inc.
    Inventor: Alexander B. Robertson
  • Cap for a smoke inhalation device
    Patent number: D257669
    Type: Grant
    Filed: August 25, 1977
    Date of Patent: December 23, 1980
    Assignee: Oat Willie's Dept. Store, Inc.
    Inventor: Alexander B. Robertson
  • Tobacco spoon
    Patent number: D545492
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: June 26, 2007
    Assignee: Republic Tobacco L.P.
    Inventors: Brian L. Schoening, Alexander B. Robertson
  • Audible message novelty item
    Patent number: D346602
    Type: Grant
    Filed: June 5, 1991
    Date of Patent: May 3, 1994
    Assignee: Adams Apple Distributing L.P.
    Inventor: Alexander B. Robertson
  • Portable scale with cover
    Patent number: D359921
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: July 4, 1995
    Assignee: Adams Apple Distributing L.P.
    Inventors: Alexander B. Robertson, Donald R. Levin