Abstract: A computing device is configured to provide multi-window interaction with a source of hierarchical data. The computing devices includes a display, a processor configured to execute programmatic instructions, and a computer-readable storage media containing a sequence of instructions that, when executed by the processor, provide a thin-client application configured to interact with the source of hierarchical data. The thin-client application provides a first user interface relative to the source of hierarchical data and a second user interface relative to a selection of hierarchical data in the first user interface. The first and second user interfaces are rendered simultaneously in response to a user input requesting multi-window display.

Abstract: An antenna for a level sensing gauge comprises an environmentally sealed chamber extending from the level sensing gauge and mounting and positionable within the interior of a storage compartment, including a breathable aperture for permitting pressure and humidity equalization between the interior of said chamber and an exterior environment.

Abstract: An antenna for a level sensing gauge comprises an environmentally sealed chamber extending from the level sensing gauge and mounting and positionable within the interior of a storage compartment, including a breathable aperture for permitting pressure and humidity equalization between the interior of said chamber and an exterior environment.

Abstract: Scrambling and descrambling systems utilizing jamming signals provide improved pictures with minimal distortion due to ghosts and artifacts. The television signal is combined with a jamming signal or signals located preferably in the vestigial sideband (VSB) of the modulated picture carrier and at about a null in the spectrum of the modulation of the picture carrier by the horizontal sync. The jamming signal or signals also preferably are placed between the harmonic components of the horizontal sync which define the horizontal sync spectrum and at frequencies which comply with governmental regulations respecting frequency locations of strong signals of CATV purposes. The jamming signals are generated by phase locking to the horizontal sync signals of the television signals or to a submultiple of the horizontal sync frequency.