Shubb Shubb Shubb is a company that specialises in producing capos for all kinds of stringed instruments. The company was formed in 1974 by banjoists Rick Shubb and Dave Coontz. Shubb capos remain a top-selling capo forty years after their invention. Shubb wanted to create a capo that would not make his instrument go out of tune, which has resulted in ongoing efforts to refine his invention. The Shubb Capo utilises an "over-centre" locking action, which is lever operated. The design includes a screw for adjusting the clamp's tightness, and has been described as "a turning point in modern capo design."
Engineered Glass Products Engineered Glass Products Engineered Glass Products, LLC, (or EGP) in Chicago, Illinois, is the parent company of Marsco Glass Products, LLC, and Thermique Technologies, LLC. Marsco Manufacturing (later Engineered Glass Products) was founded in 1947 as a manufacturer of specialized glass products, most importantly customized dials and gauges. With the arrival of television, Marsco became one of the first manufacturers to produce protective gray glass shields for television tubes. In the 1970s, Marsco engineers introduced a heat-resistant coating for glass that greatly expanded the uses for glass in kitchen appliances like self-cleaning ovens. Marsco then formed partnerships with well-known industry