Thomas T. Goldsmith Jr. and the First Electronic Game Patent (1947)
On January 25, 1947, television engineer Thomas T. Goldsmith Jr., working alongside Estle Ray Mann, filed a U.S. patent application for a 'Cathode Ray Tube Amusement Device.' Built from surplus military electronics, the device let players simulate firing a missile at a target displayed on a screen, making it the earliest known electronic game. Though never mass-produced, the invention laid conceptual groundwork for the video game industry that would emerge decades later.
From Radar Tubes to Recreation
Thomas Toliver Goldsmith Jr. spent much of the 1930s and 1940s working in television research, eventually becoming a key engineer at DuMont Laboratories, a pioneering American television manufacturer. His deep familiarity with cathode-ray tube (CRT) technology, the same tubes used in oscilloscopes and radar displays during World War II, gave him the technical foundation to imagine new applications beyond broadcasting. After the war, surplus radar equipment became widely available, and Goldsmith saw an opportunity to repurpose this hardware for entertainment rather than military use. Working with colleague Estle Ray Mann, he designed a device that used analog circuitry to control the position of a dot of light on a CRT screen, mimicking the trajectory of a missile. Players adjusted knobs to control the arc and timing of the simulated projectile, attempting to hit targets that were represented by physical overlays placed on the screen, since the technology of the era couldn't generate graphics electronically. This ingenious blend of military-derived electronics and simple mechanical overlays created an experience unlike anything previously available to the public, effectively simulating a video game's core loop of aiming, firing, and scoring using vacuum-tube technology alone.
Did You Know?
Because 1940s cathode-ray tubes could not generate stored graphics like paddles or obstacles, Goldsmith and Mann's game used physical plastic overlays taped directly onto the screen to represent targets, meaning players aimed their electronic missile at a picture stuck on the glass rather than anything generated by the circuitry itself.
Filing the Patent
On January 25, 1947, Goldsmith and Mann filed their patent application for the 'Cathode Ray Tube Amusement Device' with the United States Patent Office. The application described a system in which an electron beam's path could be manipulated by the user in real time, creating a curved trajectory across the screen that simulated the arc of a missile. The patent detailed how players controlled variables like the beam's speed and direction, an early form of the intuitive skill-based interaction that would later define arcade games. The U.S. Patent Office granted the patent, number 2,455,992, on December 14, 1948, nearly two years after the initial filing. This timeline placed the invention years ahead of what many game historians consider the next major milestones in electronic gaming, such as Alexander Douglas's OXO in 1952 or William Higinbotham's Tennis for Two in 1958. Because the patent predates these later, more widely recognized creations, historians and the U.S. Patent Office itself have credited Goldsmith and Mann's device as the earliest documented electronic game. The invention never advanced beyond a prototype stage intended for commercial arcade use, but the patent document remains a foundational artifact in the history of interactive electronic entertainment, demonstrating that the conceptual seeds of video gaming were planted well before the digital computer era began in earnest.
Legacy and Recognition
Although the Cathode Ray Tube Amusement Device never reached commercial production or widespread public use, its historical significance grew substantially as the video game industry matured in the late twentieth century. Researchers and legal scholars researching the origins of electronic gaming rediscovered Goldsmith and Mann's 1947 patent, recognizing it as compelling evidence that the concept of an interactive, screen-based amusement device predated the transistor and the digital computer entirely. The patent has since been cited in legal disputes over video game technology and referenced extensively in histories of the medium as the true starting point of electronic gaming. Beyond this singular invention, Thomas Goldsmith continued to build a distinguished career in engineering and academia. He later became a professor of physics at Furman University in Greenville, South Carolina, where he taught for many years and contributed to the school's science programs. His earlier work at DuMont Laboratories also placed him at the center of America's television industry during its formative decades, connecting his amusement device invention to the broader story of twentieth-century electronic media. Today, the 1947 patent filing is frequently cited by museums, historians, and technology writers as the definitive starting point when asked what the very first video game or electronic game actually was, cementing Goldsmith's place in technological history.