1920: Ralph J. Roberts is born on March 13 in Manhattan
1936: The Roberts family moves to Germantown, Pennsylvania
1941: Roberts graduates from the Wharton School of the University of Pennsylvania and joins the Navy
1942: Roberts marries Suzanne Fleisher in August and together they had five children, Catherine (Anthony Clifton), Lisa (David Seltzer), Ralph Jr. (Kim Roberts), Brian (Aileen Roberts) and Douglas (Diane), and eight grandchildren
1946: Roberts partners with a Navy buddy to manufacture and sell golf clubs
1950: Roberts joins the Muzak Corporation
1956: Roberts becomes president of the Pioneer Suspender Company
1961: Roberts sells Pioneer to a competitor
1963: Roberts meets Warren "Peter" Musser and Daniel Aaron on a street in Philadelphia and agrees to buy a community-antenna TV system in Tupelo, Mississippi for $500,000; American Cable Systems is born
1969: American Cable Systems is renamed Comcast Corporation and incorporated in Pennsylvania
1972: Company goes public; trades on the NASDAQ stock market
1988: Comcast becomes the nation’s fifth-largest cable company with more than 2 million customers
1990: Roberts receives the Walter Kaitz Foundation Award for contributing to the cable industry’s diversity efforts; Roberts’ son, Brian L. Roberts, is named President of Comcast
1993: Roberts receives NCTA’s "Distinguished Vanguard Award"
1996: Comcast formed Comcast-Spectacor, a sports venture owning and operating the NHL Philadelphia Flyers, the NBA Philadelphia 76ers and two indoor arenas
2000: Roberts inducted into the Cable Hall of Fame
2001: Roberts receives the William Penn Award given by the Greater Philadelphia Chamber of Commerce
2002: Comcast buys AT&T Broadband cable systems, becoming the largest cable company in America with 21 million customers; Brian L. Roberts becomes CEO
2003: Roberts receives the Steven J. Ross Humanitarian Award given by the UJA Federation and the Trustees Award from the National Academy of Television Arts & Sciences
2004: Roberts receives an honorary Doctor of Humanities from Arcadia University; Brian L. Roberts named Chairman of Comcast Corporation
2005: Roberts receives the Joseph P. Wharton Award and an Honorary Doctor of Laws degree from the University of Pennsylvania
2006: Comcast reaches over 23 million subscribers; Roberts celebrates the launch of The Roberts Proton Therapy Center at the Perelman Center for Advanced Medicine at the Hospital of the University of Pennsylvania
2010: Roberts celebrates his 90th birthday
2011: Comcast and General Electric complete their transaction to form NBCUniversal, LLC., creating a global media and technology company. Comcast acquires 51% ownership stake.
2012: Ralph Roberts and his wife Suzanne celebrate their 70th wedding anniversary
2013: Comcast announces its acquisition of GE’s 49% common equity ownership interest in NBCUniversal; celebrates its 50th anniversary as a company
2015: Ralph was presented, along with his wife Suzanne, with the Philadelphia Award in recognition of their lifetime contributions of the City of Philadelphia in the worlds of business, philanthropy, and arts and culture.