Patents by Inventor Loreto Calcagni

Loreto Calcagni 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).

  • Patent number: 4794704
    Abstract: A height level measuring device is provided and consists of an elongated transparent flexible hollow tube with scales at each open end thereof. A predetermined amount of liquid is placed within the tube so that the liquid will seek same height level at both ends no matter what height the ends are raised to, thus allowing height of two objects to be vertically measured when there is an obstacle between the two objects.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: January 3, 1989
    Inventors: Loreto Calcagni, Daniel Joyce