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Sono-Tek Corp designs and manufactures ultrasonic coating systems that apply precise, thin film coatings to a multitude of products for the microelectronics/electronics, alternative energy, medical, and industrial markets, including specialized glass applications in construction and automotive. It sells products to emerging research and development and other markets. Its ultrasonic nozzle systems use high-frequency, ultrasonic vibrations that atomize liquids into minute drops that can be applied to surfaces at low velocity providing thin layers of protective materials over a surface such as glass or metals.
DTFTax-Free Income Inc is a diversified, closed-end management investment company. Its investment objective is to provide current income exempt from regular federal income tax consistent with preservation of capital. The fund seeks to achieve its investment objective by investing in a diversified portfolio of investment-grade tax-exempt obligations.