https://speakerdeck.com/usasecuritysystems 2014-09-21 23:57:33 -0400 CCTVs were first invented in 1942, but was used for the general public in 1962. Read more details in this presentation by http://usasecuritysystems.com/ CCTVs were first invented in 1942, but was used for the general public in 1962. Read more details in this presentation by http://usasecuritysystems.com/ Mon, 22 Sep 2014 00:00:00 -0400 https://speakerdeck.com/usasecuritysystems/cctv-cameras-in-the-usa-trivia-time-by-usa-security-systems https://speakerdeck.com/usasecuritysystems/cctv-cameras-in-the-usa-trivia-time-by-usa-security-systems