Today in 1974, US Patent 3784059 A was issued, an invention of John Katzakian, for a “Beverage Can Drinking Holder.” Here’s the Abstract:

A beverage can drinking holder including an annular sleeve encircling the upper end margin of a beverage can wherein the sleeve has an interior surface gradually tapering radially inwardly progressively upwardly for receiving and seating the upper end edge of the can. The sleeve includes an annular upper end edge forming a drinking lip encircling the sleeve and spaced above the upper edge of the can a distance sufficient to provide an overflow reservoir for receiving an expanding volume of foam and beverage from the can below. In addition, a sharp rigid can-piercing element is carried within the sleeve for driving an opening into the top of the can. A stein or mug-like holder assembly includes a pair of spaced annular members for receiving the opposite ends of the can wherein one of the members is movable between advanced and retracted positions to permit insertion of the can therebetween and subsequent holding of the can by moving the movable member to its advanced position.