Patents Assigned to Kabusikigaisha Spring
  • Fish tank for allowing aquarium fish to be viewed clearly from the top
    Patent number: 9332740
    Abstract: Hitherto, when viewing from above, it has been impossible to view aquarium fish clearly due to disturbances on the water surface. Provided is an improvement method, including a manufacturing method, that makes it possible to view aquarium fish clearly from above. Adopting a structure in which overflowing water flows into an upper gutter makes it possible to view aquarium fish clearly from above for long periods of time.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: May 10, 2016
    Assignee: Kabusikigaisha Spring
    Inventor: Reiichi Miyasaki