Abstract: A single electronic charging system that can be used for different electronic components by changing a tip portion of a charging cord of the charging system. A plurality of tip portions are included with a single charging source that interfaces either with an AC power source, a 12 to 24 volt DC power source or a battery power source by merely threading a connector portion of the charging cord onto an electric cable.

Abstract: A four-ply paper board hanging hole in a display box for hanging a display box from a support rod. This is accomplished by the use of a paper board die blank having a hanging hole in four layers of the box such that, when the box is assembled, the four hanging holes are aligned to provide a strongly reinforced hanging hole which proves quite difficult to rip. Therefore, an increased aesthetic appearance of the display box is achieved, resulting in increased sales and minimal wasting of display box products.

Abstract: A drug card having a tamper proof serrated pull tab on the back. The pull tab is partially removed from the back of the drug card to provide access to a plurality of individually sealed doses of medicine. A single dose of medicine is removed from the plurality of individually sealed doses of medicine, after which the remaining individually sealed doses of medicine are placed back in the card and the card resealed. The integrity of the drug card is thereby maintained while presenting a brand name of the product to the consumer at all times.

Abstract: A fold line separating an upper section from a lower section of a drug display card such that the upper section is folded downwardly to lie parallel to and in contact with the lower portion. The upper portion is interengaged with the lower portion so as to secure the upper portion in place. In addition, both the upper portion and lower portion include a hanging hole which are in alignment with each other to form a single through passage when the upper edge is folded along an upper portion of the lower portion of the card. A double thickness reinforced hanging card is thereby provided.

Abstract: A pair of eyeglasses having a frame with interchangeable lenses and a method of interchanging the lenses. The frame has a centrally located nosepiece and two end portions. Each lens has a substantially circular aperture adjacent the nosepiece of the frame and a notch adjacent a respective end portion of the frame. The notch fits over a corresponding tang in the frame end to secure the outer portion of the lens while protruding pins on the frame adjacent the nosepiece engage the circular aperture of each lens. A hinged locking mechanism is snapped over that portion of the lens engaging the pins, preventing disengagement of the lenses from the pins. To replace the lenses, the hinged locking mechanism is opened, allowing the lenses to be disengaged from the pins and pulled from the tangs.