Abstract: An anti-ice radome having a frequency selective surface and a plurality of resistive heating elements is disclosed. The frequency selective surface prevents the resistive heating elements from disturbing the electromagnetic waves generated by an antenna within the radome. Thus, ice formation on the radome can be prevented without sacrificing the transmission characteristics of the radome.

Abstract: A spinning top game toy includes a disk-shaped playing board with three groups of upstanding pedestals mounted to the periphery of the board and a central pedestal extending upwardly from the board adjacent the center portion thereof. The upper surface of each pedestal is adapted to retain a spinning top thereon. A plurality of spinable tops are adapted to spin on the upper surfaces of the peripheral pedestals and a bonus top is adapted to spin on the upper surface of the central pedestal. The bonus top has a central spindle that has an upper surface adapted to retain a spinning top. The game is played by two or more players who, in turn, each spin the bonus top on the central pedestal and then move the spinable tops among the peripheral pedestals in a preselected sequence. Points are accumulated for successful moves of the tops until one of the tops or the bonus top stops spinning.

Abstract: The invention provides a denture liner composition for a composite denture based on a phosphonitrilic fluoroelastomer [poly(fluoroalkoxy)phosphazene] curable at atmospheric pressure at temperatures of about 100.degree. C. or less, conveniently by immersing the packed denture flask in a water bath at the appropriate temperature. The composition includes trimethacrylate and dimethacrylate cross-linking agents for increasing liner hardness and decreasing water sorption characteristics of the cured liner. The composition preferably further includes filler materials for increasing the hardness of the liner product. The composite denture is preferably prepared in a one-step process wherein the liner composition material of a single firmness is cured in situ with the denture base material.