Patents by Inventor Age Stein

Age Stein 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).

  • Sheet interfitting section puzzle
    Patent number: 4361328
    Abstract: A sheet interfitting section puzzle includes incongruent pieces with complementary indicia which are physically separated by the puzzle piece internal edges and complementally abuttable internal edges which may be arranged in only one combination with all internal edges in complementary abutting relationship. When so arranged the complementary indicia are adjacent. Internal edges may be identical and therefore pieces may fit in an incorrect location while the puzzle is being constructed, in which location indicia adjacent to complementally abutting sides would not be complementary, but all the pieces must be located in their correct locations for the puzzle to be solved.
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: November 30, 1982
    Inventors: Age Stein, Douglas E. Winters
  • Combined template and frame
    Patent number: D249950
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: October 17, 1978
    Inventor: Age Stein
  • Combined template and frame
    Patent number: D249951
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: October 17, 1978
    Inventor: Age Stein
  • Combined template and frame
    Patent number: D250033
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: October 24, 1978
    Inventor: Age Stein