Patents by Inventor Samuel Span

Samuel Span 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).

  • Bubble pipe
    Patent number: 4606731
    Abstract: A bubble pipe, which comprises a hollow tubular member having first and second open ends, a mouthpiece closing said first end and having an orifice therein communicating with the interior of said hollow member, said second end being adapted to support a film of a bubble solution thereacross, and a film divider at the second end for dividing the film of bubble solution carried by the second end, the cross-sectional area of the opening at said second end being about sixteen times the cross-sectional area of said mouthpiece.
    Type: Grant
    Filed: June 27, 1984
    Date of Patent: August 19, 1986
    Inventor: Samuel Span