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Company Description (as filed with the SEC)
Electro-Sensors, Inc. ("we," "us," "our," the "Company" or "ESI") is engaged in manufacturing and selling industrial production monitoring and process control systems. In addition, through our subsidiary ESI Investment Company, we periodically make strategic investments in other businesses and companies, primarily when we believe that these investments will facilitate the development of technology complementary to our existing products. Although we invest in other businesses and companies through our subsidiary ESI Investment Company, we do not intend to become an investment company and intend to remain primarily an operating company. As of March 12, 2015, our primary investment is 49,066 shares of Rudolph Technologies, Inc., which is accounted for using the available-for-sale method. Unless indicated otherwise, the terms "Company" and "ESI" when used herein, include Electro-Sensors, Inc. and its consolidated subsidiaries. ... More ...