Abstract: Methods, systems and techniques for the accurate measurement breath-borne biomarkers are disclosed. Such methods, systems and techniques may be used for the purposes of detection and/or measurement in breath samples of biomarkers.

Abstract: The present invention provides a window screen having operators that secure the window screen relative to a window frame. A pair of single rail operators releasably secure the upper end of the screen relative to the upper end of the window frame. A pair of double rail operators releasably secure the lower end and sides of the screen relative to the lower end and sides of the window frame.

Abstract: The present invention provides a window screen having operators that secure the window screen relative to a window frame. A pair of single rail operators releasably secure the upper end of the screen relative to the upper end of the window frame. A pair of double rail operators releasably secure the lower end and sides of the screen relative to the lower end and sides of the window frame.

Abstract: The present invention provides a double-hung window assembly having at least one sash slideably mounted within a frame. Elongate stops are secured along opposite sides of the slideable sash and are moveable between first positions interengaging a respective side of the frame and second positions free of engagement with the frame. When the stops are in their first positions, the sash is constrained to move in a linear path relative to the frame. When the stops are in their second position, the sash is free to pivot relative to the frame about pins or similar structure extending between the sash and the frame.

Abstract: The present invention provides a sash profile having a first channel that opens toward and receives a glass panel and a second channel that opens toward and is covered by the glass panel. The second channel and the glass panel cooperate to define a continuous passage about the perimeter of the sash.

Abstract: The present invention provides a mulling strip that interconnects a first window frame and a second window frame. The mulling strip includes structure disposed between the frames to prevent the frames from moving or deflecting toward one another, and structure that interengages the frames to prevent the frames from moving or deflecting away from one another.

Abstract: Disclosed is a method and apparatus for combining a plurality of television signal channels which are immediately adjacent in frequency to each other. A main transmission line transmits a plurality of television signals therethrough in a predetermined direction of transmission. The visual signal of a first of the television channels is inserted into the main transmission line in the predetermined direction. The visual signal of a second, immediately adjacent television channel is then inserted into the main transmission line in the predetermined direction, using a frequency band otherwise occupied by the aural signal of the first television channel as a guard band to separate the combined visual signals of the first and second television channels.

Abstract: A weatherstrip (20) for use with a slideable panel unit having a first panel and second panel, one of the panels being a slideable panel is disclosed. The weatherstrip (20) includes an engaging member (21) having a leading edge (26a-c) and having a first end (21a), a center region (21b) and a second end (21c). An offset member (22) is cooperatively connected to the engaging member (21), wherein when the offset member (22) is connected to one of the panels, the engaging member (21) is in a generally parallel spaced relationship to one of the panels. The leading edge (26b) of the engaging member (21) is in inwardly displaced at the center region (21b) with respect to the leading edge (26a) and (26c) at the ends (21a and c), whereby the inward displaced region (21b) reduces clashing between the panels when one of the panels is bowed.

Abstract: A unitary weatherplug in combination with a moveable panel, such as a door or window, for sealing the space between a sill and the undersurface of a portion of the moveable panel. The weatherplug comprises a unitary body of soft resilient material having a bottom surface affixed to the sill, and an upper curved surface engageable by the undersurface of the moveable panel.