Berezin filed a patent concerning apparatus for generating information signals.
On August 5, 1966, Evelyn Berezin filed U.S. patent application US 3,508,227, titled "Information signal generation apparatus." This invention concerned the generation of electronic signals used to encode and transmit information within computing systems.
Signal generation was a critical component of the real-time, networked computing systems Berezin was developing during this period, including her landmark work on the United Airlines reservation system. Reliable signal generation ensured that data could be accurately encoded, transmitted, and interpreted across the distributed terminals and central processors that made up such systems.
This patent represents a continuation of Berezin's deep technical engagement with the fundamentals of electronic information systems throughout the 1960s. Her work in this area, though highly technical and often invisible to the public, was essential to the successful operation of the first generation of large-scale, real-time business computing systems—technology that would go on to revolutionize industries from air travel to banking, and that laid crucial groundwork for her later, more publicly celebrated invention of the Data Secretary word processor.