Abstract: A biopsy specimen collector for use with a vacuum source includes a closed receptacle having an inlet opening and an outlet opening. The outlet opening is adapted to be connected to the vacuum source. A removable cover provides access into the interior of the receptacle. A fluid channel tube inside the receptacle has one end connected to the outlet opening, with its other end being open and being positioned substantially at the geometric centroid of the receptacle to facilitate operation of the collector without regard of its orientation during use.

Abstract: A method and apparatus for testing the tip-ring polarity of telephone receptacles connected in parallel to a non-working pair includes a battery and an LED, the device being capable of being plugged into a subscriber's telephone receptacle. When a diode is properly placed across the non-working pair, the LED will light if the final terminals of the receptacle are wired with the correct tip-ring polarity. The disclosure teaches that the diode may be incorporated in various types of packages and may be connected across the non-working pair in several different ways.

Abstract: A device for testing the tip-ring polarity of telephone jacks includes a battery and an LED, the device being capable of being plugged into a jack. When a diode is placed across the jack, the LED will light if the final terminals of the jack are wired with the correct tip-ring polarity. The disclosure teaches that the diode may be incorporated in various types of packages and may be connected across the jack in several different ways.